fix while loop check #3

hl33ta · 2022-07-14T19:15:55Z

label section lengths cannot exceed 64bytes 1 for the length octet 63 for the character adding this check to replace the check for compressed records as this check covers that as well

``` ==222479==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60b000014739 at pc 0x55af06f2364f bp 0x7ffd7b6f4bf0 sp 0x7ffd7b6f4378 READ of size 12 at 0x60b000014739 thread T0 #0 0x55af06f2364e in printf_common(void*, char const*, __va_list_tag*) asan_interceptors.cpp.o #1 0x55af06f24f70 in __interceptor_snprintf (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x613f70) (BuildId: f6545ec2bd7663bc3f16aeeb87bddc64d173a2a8) #2 0x55af0720927f in ndpi_check_http_header /home/ivan/svnrepos/nDPI/src/lib/protocols/http.c:982:2 #3 0x55af071f4797 in ndpi_check_http_tcp /home/ivan/svnrepos/nDPI/src/lib/protocols/http.c:1219:5 #4 0x55af071f05c5 in ndpi_search_http_tcp /home/ivan/svnrepos/nDPI/src/lib/protocols/http.c:1402:3 #5 0x55af07080d1e in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5150:6 #6 0x55af07081734 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5198:12 #7 0x55af070813d7 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5217:12 ntop#8 0x55af070939f7 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6076:15 ntop#9 0x55af06fc7e1f in packet_processing /home/ivan/svnrepos/nDPI/example/reader_util.c:1541 ntop#10 0x55af06fc7e1f in ndpi_workflow_process_packet /home/ivan/svnrepos/nDPI/example/reader_util.c:2110 ntop#11 0x55af06fc2859 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:109:7 ntop#12 0x55af06fc2feb in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:181:17 ntop#13 0x7efe5eaac082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#14 0x55af06f0055d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x5ef55d) (BuildId: f6545ec2bd7663bc3f16aeeb87bddc64d173a2a8) 0x60b000014739 is located 0 bytes to the right of 105-byte region [0x60b0000146d0,0x60b000014739) allocated by thread T0 here: #0 0x55af06f84bae in malloc (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x673bae) (BuildId: f6545ec2bd7663bc3f16aeeb87bddc64d173a2a8) #1 0x55af06fc2673 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:103:31 #2 0x55af06fc2feb in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:181:17 #3 0x7efe5eaac082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ``` Fiund by oss-fuzzer. See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47724

``` Uninitialized bytes in __interceptor_strlen at offset 0 inside [0x7ffc987443a0, 7) ==282918==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x5651277e001b in ndpi_strdup /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:268:13 #1 0x5651277a45c1 in ndpi_set_risk /home/ivan/svnrepos/nDPI/src/lib/ndpi_utils.c:2254:12 #2 0x5651278cfaa6 in processClientServerHello /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1515:8 #3 0x5651278e7834 in processTLSBlock /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:865:5 #4 0x5651278e60bd in ndpi_search_tls_tcp /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1024:2 #5 0x5651278e1ffc in ndpi_search_tls_wrapper /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:2445:5 #6 0x565127831c2a in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5150:6 #7 0x565127832938 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5198:12 ntop#8 0x5651278323a1 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5217:12 ntop#9 0x565127843e3a in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6076:15 ntop#10 0x56512778641f in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ntop#11 0x5651277874ae in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:101:17 ntop#12 0x7f4c46794082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#13 0x5651276fe40d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0xa340d) ``` Found by oss-fuzzer See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47728

``` ==300852==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7f108951f060 at pc 0x5641db0ee78c bp 0x7fff3b10b910 sp 0x7fff3b10b0d0 WRITE of size 116 at 0x7f108951f060 thread T0 #0 0x5641db0ee78b in __interceptor_strncpy (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x64e78b) (BuildId: 23cb34bbaf8ac11eb97563bbdc12e29ead9fb0fa) #1 0x5641db28efad in tlsCheckUncommonALPN /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1224:7 #2 0x5641db27ec76 in processClientServerHello /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1533:6 #3 0x5641db295677 in processTLSBlock /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:865:5 #4 0x5641db2935bb in ndpi_search_tls_tcp /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1024:2 #5 0x5641db28f692 in ndpi_search_tls_wrapper /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:2446:5 #6 0x5641db1d87ce in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5150:6 #7 0x5641db1d91e4 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5198:12 ntop#8 0x5641db1d8e87 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5217:12 ntop#9 0x5641db1eb4a7 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6076:15 ntop#10 0x5641db140b45 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ntop#11 0x5641db14130b in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:101:17 ntop#12 0x7f108bcab082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#13 0x5641db07f46d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x5df46d) (BuildId: 23cb34bbaf8ac11eb97563bbdc12e29ead9fb0fa) Address 0x7f108951f060 is located in stack of thread T0 at offset 96 in frame #0 0x5641db28ec4f in tlsCheckUncommonALPN /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1204 This frame has 1 object(s): [32, 96) 'str' (line 1218) <== Memory access at offset 96 overflows this variable HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork (longjmp and C++ exceptions *are* supported) SUMMARY: AddressSanitizer: stack-buffer-overflow (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x64e78b) (BuildId: 23cb34bbaf8ac11eb97563bbdc12e29ead9fb0fa) in __interceptor_strncpy Shadow bytes around the buggy address: ``` Avoid zeroing the entire string. Found by oss-fuzzer See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47730

Proper fix for the error already reported in 9040bc7 ``` Uninitialized bytes in __interceptor_strlen at offset 3 inside [0x7ffc7a147390, 4) ==111876==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x55e3e4f32e5b in ndpi_strdup /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:268:13 #1 0x55e3e4ef7391 in ndpi_set_risk /home/ivan/svnrepos/nDPI/src/lib/ndpi_utils.c:2254:12 #2 0x55e3e5022fdf in processClientServerHello /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1523:8 #3 0x55e3e503af44 in processTLSBlock /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:865:5 #4 0x55e3e50397cd in ndpi_search_tls_tcp /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1024:2 #5 0x55e3e503570c in ndpi_search_tls_wrapper /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:2453:5 #6 0x55e3e4f84a6a in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5150:6 #7 0x55e3e4f85778 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5198:12 ntop#8 0x55e3e4f851e1 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5217:12 ntop#9 0x55e3e4f96c7a in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6076:15 ntop#10 0x55e3e4ed91ef in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ntop#11 0x55e3e4eda27e in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:101:17 ntop#12 0x7f5cb3146082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#13 0x55e3e4e5140d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0xa340d) (BuildId: 0c02c433e039970dd13a60382b94dd5a8e19f625) ```

We can access `flow->protos` union only after checking the protocol. Checking `flow->detected_protocol.master_protocol` is redundant because we already check it in `is_ndpi_proto` ``` AddressSanitizer:DEADLYSIGNAL ================================================================= ==29739==ERROR: AddressSanitizer: SEGV on unknown address 0x000000353820 (pc 0x7f9b64dd2717 bp 0x7fff161a52f0 sp 0x7fff161a4aa8 T0) ==29739==The signal is caused by a READ memory access. #0 0x7f9b64dd2717 /build/glibc-SzIz7B/glibc-2.31/string/../sysdeps/x86_64/multiarch/strlen-avx2.S:96 #1 0x555c65e597d8 in __interceptor_strlen (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x6407d8) (BuildId: 11ac8ec30f1d49fb0276c9b03368e491505d2bba) #2 0x555c65fd85fa in ndpi_strdup /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:269:13 #3 0x555c65f3e8c6 in process_ndpi_collected_info /home/ivan/svnrepos/nDPI/example/reader_util.c:1188:36 #4 0x555c65f52cab in packet_processing /home/ivan/svnrepos/nDPI/example/reader_util.c:1567:2 #5 0x555c65f4b632 in ndpi_workflow_process_packet /home/ivan/svnrepos/nDPI/example/reader_util.c:2110:10 #6 0x555c65f04d29 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:109:7 #7 0x555c65f054bb in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:181:17 ntop#8 0x7f9b64c6e082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#9 0x555c65e4253d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x62953d) (BuildId: 11ac8ec30f1d49fb0276c9b03368e491505d2bba) ``` Found by oss-fuzzer. See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=48020

``` protocols/snmp_proto.c:77:23: runtime error: signed integer overflow: 6 + 2147483647 cannot be represented in type 'int' #0 0x52f69e in ndpi_search_snmp ndpi/src/lib/protocols/snmp_proto.c:77:23 #1 0x4c5347 in check_ndpi_detection_func ndpi/src/lib/ndpi_main.c:5211:4 #2 0x4c5591 in ndpi_check_flow_func ndpi/src/lib/ndpi_main.c:0 #3 0x4c8903 in ndpi_detection_process_packet ndpi/src/lib/ndpi_main.c:6145:15 #4 0x4b3712 in LLVMFuzzerTestOneInput ndpi/fuzz/fuzz_process_packet.c:29:5 [...] ``` Found by oss-fuzzer. See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49057

``` ==160665==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x604000000038 at pc 0x55f7250d9a5c bp 0x7fff02c82b90 sp 0x7fff02c82350 READ of size 4 at 0x604000000038 thread T0 #0 0x55f7250d9a5b in __interceptor_strncpy (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x548a5b) (BuildId: 12fd06e7a171f035d3a25f016184ac357088379c) #1 0x55f7253e6495 in dissect_softether_ip_port /home/ivan/svnrepos/nDPI/src/lib/protocols/softether.c:303:3 #2 0x55f7253e5703 in ndpi_search_softether /home/ivan/svnrepos/nDPI/src/lib/protocols/softether.c:330:9 #3 0x55f7251d87c5 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5397:6 #4 0x55f7251d958b in check_ndpi_udp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5433:10 #5 0x55f7251d8f2c in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5466:12 #6 0x55f7251ead39 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6293:15 #7 0x55f72512b87e in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ntop#8 0x55f72512b9f7 in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:101:17 ntop#9 0x7fdef837b082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#10 0x55f72506a45d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x4d945d) (BuildId: 12fd06e7a171f035d3a25f016184ac357088379c) ``` Found by oss-fuzz. See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49638

The first change is a proper (hopefully) fix for the bug reported in 8b6a00f. The second one is related to: ``` ==15096==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60f0000d7a00 at pc 0x55a2c593bd0b bp 0x7ffc92021cd0 sp 0x7ffc92021478 READ of size 3 at 0x60f0000d7a00 thread T0 #0 0x55a2c593bd0a in strncmp (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader+0x56fd0a) (BuildId: ee8631c0950a8cded5ba60c17f09709bbebbe5d8) #1 0x55a2c5d1d9f9 in dissect_softether_host_fqdn /home/ivan/svnrepos/nDPI/src/lib/protocols/softether.c:249:9 #2 0x55a2c5d1b55b in ndpi_search_softether /home/ivan/svnrepos/nDPI/src/lib/protocols/softether.c:348:9 #3 0x55a2c5b0e9c5 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5407:6 #4 0x55a2c5b0f78b in check_ndpi_udp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5443:10 #5 0x55a2c5b0f12c in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5476:12 #6 0x55a2c5b20f39 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6303:15 #7 0x55a2c5a3014c in packet_processing /home/ivan/svnrepos/nDPI/example/reader_util.c:1600:31 ntop#8 0x55a2c5a29062 in ndpi_workflow_process_packet /home/ivan/svnrepos/nDPI/example/reader_util.c:2170:10 ntop#9 0x55a2c59e51a2 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:107:7 ntop#10 0x55a2c590acb2 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader+0x53ecb2) (BuildId: ee8631c0950a8cded5ba60c17f09709bbebbe5d8) ntop#11 0x55a2c590a3c5 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool, bool*) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader+0x53e3c5) (BuildId: ee8631c0950a8cded5ba60c17f09709bbebbe5d8) ntop#12 0x55a2c590c0f6 in fuzzer::Fuzzer::ReadAndExecuteSeedCorpora(std::vector<fuzzer::SizedFile, std::allocator<fuzzer::SizedFile>>&) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader+0x5400f6) (BuildId: ee8631c0950a8cded5ba60c17f09709bbebbe5d8) ntop#13 0x55a2c590c663 in fuzzer::Fuzzer::Loop(std::vector<fuzzer::SizedFile, std::allocator<fuzzer::SizedFile>>&) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader+0x540663) (BuildId: ee8631c0950a8cded5ba60c17f09709bbebbe5d8) ntop#14 0x55a2c58faff2 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader+0x52eff2) (BuildId: ee8631c0950a8cded5ba60c17f09709bbebbe5d8) ntop#15 0x55a2c5923c82 in main (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader+0x557c82) (BuildId: ee8631c0950a8cded5ba60c17f09709bbebbe5d8) ntop#16 0x7f504ab98082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#17 0x55a2c58efb1d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader+0x523b1d) (BuildId: ee8631c0950a8cded5ba60c17f09709bbebbe5d8) 0x60f0000d7a00 is located 0 bytes to the right of 176-byte region [0x60f0000d7950,0x60f0000d7a00) ``` Found by oss-fuzzer See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49736

``` ==26717==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60c0000000bf at pc 0x55e503f8959b bp 0x7fff7f6876b0 sp 0x7fff7f686e58 READ of size 1 at 0x60c0000000bf thread T0 #0 0x55e503f8959a in strncmp (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x4f459a) (BuildId: 44038d7ca9391c877fae9b2735828da9905a6daa) #1 0x55e5042ee98f in dissect_softether_host_fqdn /home/ivan/svnrepos/nDPI/src/lib/protocols/softether.c:236:8 #2 0x55e5042ec41b in ndpi_search_softether /home/ivan/svnrepos/nDPI/src/lib/protocols/softether.c:318:8 #3 0x55e5040e0345 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5414:6 #4 0x55e5040e110b in check_ndpi_udp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5450:10 #5 0x55e5040e0aac in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5483:12 #6 0x55e5040f2838 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6308:15 #7 0x55e50403287e in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ntop#8 0x55e5040329f7 in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:101:17 ntop#9 0x7fd09fdbb082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#10 0x55e503f7145d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x4dc45d) (BuildId: 44038d7ca9391c877fae9b2735828da9905a6daa) ``` Found by oss-fuzzer See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49901

Initializing `low->detected_protocol_stack[1]` but not `low->detected_protocol_stack[0]` lead to *very* strange errors. Oss-fuzzer, exploiting this bug, has been able to crash the application or to leak some memory ``` ==19775==ERROR: AddressSanitizer: SEGV on unknown address (pc 0x5624c0dd1802 bp 0x5624c197e848 sp 0x7fff4b4db690 T0) ==19775==The signal is caused by a READ memory access. ==19775==Hint: this fault was caused by a dereference of a high value address (see register values below). Disassemble the provided pc to learn which register was used. #0 0x5624c0dd1802 in __asan::Allocator::Deallocate(void*, unsigned long, unsigned long, __sanitizer::BufferedStackTrace*, __asan::AllocType) (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x522802) (BuildId: 9a1ed9efcaf47e345767c86520372d28e31ca1aa) #1 0x5624c0e53ea6 in __interceptor_free (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x5a4ea6) (BuildId: 9a1ed9efcaf47e345767c86520372d28e31ca1aa) #2 0x5624c0ebb474 in free_wrapper /home/ivan/svnrepos/nDPI/example/reader_util.c:330:3 #3 0x5624c0f75561 in ndpi_free /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:240:7 #4 0x5624c0faa921 in ndpi_free_flow_data /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:4915:2 #5 0x5624c0f755ef in ndpi_free_flow /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:8076:5 #6 0x5624c0f755c4 in ndpi_flow_free /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:253:5 #7 0x5624c0eba981 in ndpi_free_flow_info_half /home/ivan/svnrepos/nDPI/example/reader_util.c:305:25 ntop#8 0x5624c0ecb4bc in process_ndpi_collected_info /home/ivan/svnrepos/nDPI/example/reader_util.c:1317:5 ntop#9 0x5624c0edca36 in packet_processing /home/ivan/svnrepos/nDPI/example/reader_util.c:1639:2 ntop#10 0x5624c0ed5172 in ndpi_workflow_process_packet /home/ivan/svnrepos/nDPI/example/reader_util.c:2182:10 ntop#11 0x5624c0e90a80 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:107:7 ntop#12 0x5624c0e90bbb in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:179:17 ntop#13 0x7f580731f082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#14 0x5624c0dcf52d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x52052d) (BuildId: 9a1ed9efcaf47e345767c86520372d28e31ca1aa) ``` ``` ==17492==ERROR: LeakSanitizer: detected memory leaks Direct leak of 5 byte(s) in 1 object(s) allocated from: #0 0x55b799b0f01e in malloc (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x56101e) (BuildId: d2adbfb29a6eda6dc59fdfb8930d7e6496ac7b8b) #1 0x55b799bb3bf4 in ndpi_malloc /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:212:46 #2 0x55b799bb3f28 in ndpi_strdup /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:279:13 #3 0x55b799c8b9bf in processCertificateElements /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:683:39 #4 0x55b799c81e89 in processCertificate /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:835:7 #5 0x55b799c8d500 in processTLSBlock /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:889:13 #6 0x55b799ca80f1 in ndpi_search_tls_tcp /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1034:2 #7 0x55b799ca3be2 in ndpi_search_tls_wrapper /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:2475:5 ntop#8 0x55b799bf9345 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5414:6 ntop#9 0x55b799bf9d57 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5462:12 ntop#10 0x55b799bf99f7 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5481:12 ntop#11 0x55b799c0b838 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6308:15 ntop#12 0x55b799b4b87e in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ``` ``` ==17511==ERROR: LeakSanitizer: detected memory leaks Direct leak of 1 byte(s) in 1 object(s) allocated from: #0 0x55aed645e01e in malloc (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x56101e) (BuildId: d2adbfb29a6eda6dc59fdfb8930d7e6496ac7b8b) #1 0x55aed6502bf4 in ndpi_malloc /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:212:46 #2 0x55aed6502f28 in ndpi_strdup /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:279:13 #3 0x55aed65ea0c6 in processClientServerHello /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:2153:34 #4 0x55aed65dbe77 in processTLSBlock /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:867:5 #5 0x55aed65f70f1 in ndpi_search_tls_tcp /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:1034:2 #6 0x55aed65f2be2 in ndpi_search_tls_wrapper /home/ivan/svnrepos/nDPI/src/lib/protocols/tls.c:2475:5 #7 0x55aed6548345 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5414:6 ntop#8 0x55aed6548d57 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5462:12 ntop#9 0x55aed65489f7 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5481:12 ntop#10 0x55aed655a838 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6308:15 ntop#11 0x55aed649a87e in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ``` See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49844 See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49842 See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49906 See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=49915

``` ==12308==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60600068f4b4 at pc 0x5603d2b56098 bp 0x7ffc967bd3b0 sp 0x7ffc967bd3a8 READ of size 2 at 0x60600068f4b4 thread T0 #0 0x5603d2b56097 in ndpi_search_florensia /home/ivan/svnrepos/nDPI/src/lib/protocols/florensia.c:93:40 #1 0x5603d2a2e835 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5414:6 #2 0x5603d2a2f247 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5462:12 #3 0x5603d2a2eee7 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5481:12 #4 0x5603d2a3ffb5 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6308:15 #5 0x5603d2955f4c in packet_processing /home/ivan/svnrepos/nDPI/example/reader_util.c:1612:31 #6 0x5603d294ee64 in ndpi_workflow_process_packet /home/ivan/svnrepos/nDPI/example/reader_util.c:2182:10 #7 0x5603d290aa50 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:107:7 ntop#8 0x5603d290ab8b in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:179:17 ntop#9 0x7f972cdc9082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#10 0x5603d28494fd in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x4be4fd) (BuildId: e81373a75c70e248ba9ae985fcb4134e7113121a) ``` ``` ==14164==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60d0000000c1 at pc 0x561608bada2c bp 0x7ffc40d38ed0 sp 0x7ffc40d38690 READ of size 10 at 0x60d0000000c1 thread T0 #0 0x561608bada2b in __interceptor_strncpy (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x4e9a2b) (BuildId: 2e4fd67f1aeb93c491a04ae424331669c993ee9b) #1 0x561608e66f2a in dissect_softether_host_fqdn /home/ivan/svnrepos/nDPI/src/lib/protocols/softether.c:226:2 #2 0x561608e64e88 in ndpi_search_softether /home/ivan/svnrepos/nDPI/src/lib/protocols/softether.c:316:8 #3 0x561608ca7475 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5414:6 #4 0x561608ca823b in check_ndpi_udp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5450:10 #5 0x561608ca7bdc in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5483:12 #6 0x561608cb8bf5 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6308:15 #7 0x561608bff84e in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 ntop#8 0x561608bff9c7 in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:101:17 ntop#9 0x7fc50662d082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#10 0x561608b3e42d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x47a42d) (BuildId: 2e4fd67f1aeb93c491a04ae424331669c993ee9b) ``` Found by oss-fuzzer. See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50105 See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50110 See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=50268

``` ==12318==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x604000000032 at pc 0x55a59ec97959 bp 0x7fffee67fdd0 sp 0x7fffee67fdc8 READ of size 1 at 0x604000000032 thread T0 #0 0x55a59ec97958 in may_be_0rtt /home/ivan/svnrepos/nDPI/src/lib/protocols/quic.c:1483:24 #1 0x55a59ec9515f in ndpi_search_quic /home/ivan/svnrepos/nDPI/src/lib/protocols/quic.c:1708:13 #2 0x55a59ec32e95 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5428:6 #3 0x55a59ec33c5b in check_ndpi_udp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5464:10 #4 0x55a59ec335fc in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5497:12 #5 0x55a59ec44615 in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:6322:15 #6 0x55a59eb8884e in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:29:5 #7 0x55a59eb889c7 in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:101:17 ntop#8 0x7fb5b3ba2082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#9 0x55a59eac742d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x47d42d) (BuildId: 712c87b21cf5c05f64174745909c693d3ba0b62e) 0x604000000032 is located 0 bytes to the right of 34-byte region [0x604000000010,0x604000000032) allocated by thread T0 here: #0 0x55a59eb4bfee in malloc (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x501fee) (BuildId: 712c87b21cf5c05f64174745909c693d3ba0b62e) #1 0x55a59eb8899c in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:87:17 ``` Found by CI tests. See: https://github.com/ntop/nDPI/runs/7996151458?check_suite_focus=true

Found by oss-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=44280 ``` ==263603==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x592478 in ndpi_is_printable_string ndpi/src/lib/ndpi_utils.c:2200:9 #1 0x5b047c in processCertificateElements ndpi/src/lib/protocols/tls.c:400:7 #2 0x5ac880 in processCertificate ndpi/src/lib/protocols/tls.c:790:7 #3 0x5c3a32 in processTLSBlock ndpi/src/lib/protocols/tls.c:844:13 #4 0x5c2c61 in ndpi_search_tls_tcp ndpi/src/lib/protocols/tls.c:973:2 #5 0x5c117d in ndpi_search_tls_wrapper ndpi/src/lib/protocols/tls.c:2367:5 #6 0x552a50 in check_ndpi_detection_func ndpi/src/lib/ndpi_main.c:4792:6 ```

``` ==38674==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60400008957f at pc 0x5653fcee6434 bp 0x7ffe9b554b50 sp 0x7ffe9b554b48 READ of size 1 at 0x60400008957f thread T0 #0 0x5653fcee6433 in ndpi_workflow_process_packet /home/ivan/svnrepos/nDPI/example/reader_util.c:2050:18 #1 0x5653fce9fc0d in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:107:7 #2 0x5653fcea03eb in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:179:17 #3 0x7fe71dc3d0b2 in __libc_start_main /build/glibc-YbNSs7/glibc-2.31/csu/../csu/libc-start.c:308:16 #4 0x5653fcddf67d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x58a67d) (BuildId: 525418a27e8c37d6c492cc3220e0e97809c40f98) 0x60400008957f is located 0 bytes to the right of 47-byte region [0x604000089550,0x60400008957f) allocated by thread T0 here: ``` Found by oss-fuzz See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=45036

``` ==20492==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60300000578c at pc 0x55c47455e3ea bp 0x7ffc62ca1eb0 sp 0x7ffc62ca1ea8 READ of size 4 at 0x60300000578c thread T0 #0 0x55c47455e3e9 in ndpi_workflow_process_packet /home/ivan/svnrepos/nDPI/example/reader_util.c:1840:16 #1 0x55c47451b9cd in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:107:7 #2 0x55c47451c1ab in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:179:17 #3 0x7f661b50e0b2 in __libc_start_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16 #4 0x55c47445b54d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x61054d) (BuildId: eba4bb4cd43b7101e4f0028ec0fb79087bae0e37) 0x60300000578d is located 0 bytes to the right of 29-byte region [0x603000005770,0x60300000578d) ```

``` ================================================================= ==19324==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60600061be96 at pc 0x55b4a4cb4460 bp 0x7ffc7b461a70 sp 0x7ffc7b461a68 READ of size 1 at 0x60600061be96 thread T0 #0 0x55b4a4cb445f in ndpi_check_tinc /home/ivan/svnrepos/nDPI/src/lib/protocols/tinc.c:105:9 #1 0x55b4a4cb1888 in ndpi_search_tinc /home/ivan/svnrepos/nDPI/src/lib/protocols/tinc.c:135:5 #2 0x55b4a4b4a6e1 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5013:6 #3 0x55b4a4b4c2d4 in check_ndpi_tcp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5084:12 #4 0x55b4a4b4bf77 in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5103:12 #5 0x55b4a4b5dcca in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5924:15 #6 0x55b4a4a87734 in packet_processing /home/ivan/svnrepos/nDPI/example/reader_util.c:1519:31 #7 0x55b4a4a80761 in ndpi_workflow_process_packet /home/ivan/svnrepos/nDPI/example/reader_util.c:2093:10 ntop#8 0x55b4a4a39c8d in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:107:7 ntop#9 0x55b4a4a3a46b in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader.c:179:17 ntop#10 0x7f69c63760b2 in __libc_start_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#11 0x55b4a497954d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_ndpi_reader_with_main+0x61654d) (BuildId: 705ebc5c412d267294a65cb01f03a1f012aeaf20) 0x60600061be96 is located 0 bytes to the right of 54-byte region [0x60600061be60,0x60600061be96) allocated by thread T0 here: [...] ``` Found by oss-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46499

``` ==19724==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60e00000045e at pc 0x5620b8b3d3cc bp 0x7ffe0fda6b50 sp 0x7ffe0fda6310 READ of size 2 at 0x60e00000045e thread T0 #0 0x5620b8b3d3cb in __interceptor_strncpy (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x63f3cb) (BuildId: ee53ff920c8cd4c226d8520a0d4846d8864726b6) #1 0x5620b8d9b69c in strncpy_lower /home/ivan/svnrepos/nDPI/src/lib/protocols/kerberos.c:208:4 #2 0x5620b8d995a0 in krb_parse /home/ivan/svnrepos/nDPI/src/lib/protocols/kerberos.c:316:5 #3 0x5620b8d97a90 in ndpi_search_kerberos /home/ivan/svnrepos/nDPI/src/lib/protocols/kerberos.c:687:12 #4 0x5620b8bcef35 in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:4996:4 #5 0x5620b8bd1be8 in check_ndpi_udp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5072:10 #6 0x5620b8bd159c in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5105:12 #7 0x5620b8be323a in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5924:15 ntop#8 0x5620b8b8f7e0 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:24:3 ntop#9 0x5620b8b8fd1b in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:84:17 ntop#10 0x7f45b32b90b2 in __libc_start_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#11 0x5620b8acf47d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x5d147d) (BuildId: ee53ff920c8cd4c226d8520a0d4846d8864726b6) 0x60e00000045e is located 0 bytes to the right of 158-byte region [0x60e0000003c0,0x60e00000045e) allocated by thread T0 here: #0 0x5620b8b5283e in malloc (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x65483e) (BuildId: ee53ff920c8cd4c226d8520a0d4846d8864726b6) #1 0x5620b8b8fc86 in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:70:17 #2 0x7f45b32b90b2 in __libc_start_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16 ``` ``` protocols/kerberos.c:79:52: runtime error: left shift of 255 by 24 places cannot be represented in type 'int' ``` Found by oss-fuzz: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46670 https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=46636

``` ==120637==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x606000000488 at pc 0x55a0598d97ec bp 0x7ffcfe13f2e0 sp 0x7ffcfe13f2d8 READ of size 2 at 0x606000000488 thread T0 #0 0x55a0598d97eb in ndpi_search_raknet /home/ivan/svnrepos/nDPI/src/lib/protocols/raknet.c:152:38 #1 0x55a05966c48e in check_ndpi_detection_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5060:6 #2 0x55a05966e428 in check_ndpi_udp_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5119:10 #3 0x55a05966dddc in ndpi_check_flow_func /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5152:12 #4 0x55a05967fa7a in ndpi_detection_process_packet /home/ivan/svnrepos/nDPI/src/lib/ndpi_main.c:5971:15 #5 0x55a05962b860 in LLVMFuzzerTestOneInput /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:24:3 #6 0x55a05962bd9b in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:84:17 #7 0x7f4aad7d80b2 in __libc_start_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16 ntop#8 0x55a05956b46d in _start (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x5d746d) (BuildId: 9429d3d08edc3836e5536f93c07f140716d8b82e) 0x606000000488 is located 9 bytes to the right of 63-byte region [0x606000000440,0x60600000047f) allocated by thread T0 here: #0 0x55a0595ee80e in malloc (/home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet_with_main+0x65a80e) (BuildId: 9429d3d08edc3836e5536f93c07f140716d8b82e) #1 0x55a05962bd06 in main /home/ivan/svnrepos/nDPI/fuzz/fuzz_process_packet.c:70:17 #2 0x7f4aad7d80b2 in __libc_start_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16 ``` Found by oss-fuzz See: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47000

fix while loop check

fb98557

spendletonliveaction merged commit 0bb6af2 into threateye Jul 14, 2022

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fix while loop check #3

fix while loop check #3

hl33ta commented Jul 14, 2022

fix while loop check #3

fix while loop check #3

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hl33ta commented Jul 14, 2022