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on lrzip version 0.631
#lrzip -i $FILE stack-buffer-overflow on address 0x7fffdd1d38b8 at pc 0x7fcd199a9795 bp 0x7fffdd1d3620 sp 0x7fffdd1d2dd0 WRITE of size 65 at 0x7fffdd1d38b8 thread T0 #0 0x7fcd199a9794 in __interceptor_read ../../../../libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:545 #1 0x412cf0 in get_fileinfo /home/haojun/Downloads/lrzip-master/lrzip.c:979 #2 0x409ee1 in main /home/haojun/Downloads/lrzip-master/main.c:671 #3 0x7fcd186e5b34 in __libc_start_main (/lib64/libc.so.6+0x21b34) #4 0x403648 (/home/haojun/Downloads/lrzip-build/bin/lrzip+0x403648) Address 0x7fffdd1d38b8 is located in stack of thread T0 at offset 424 in frame #0 0x412454 in get_fileinfo /home/haojun/Downloads/lrzip-master/lrzip.c:926 This frame has 10 object(s): [32, 33) 'chunk_byte' [96, 97) 'ctype' [160, 168) 'u_len' [224, 232) 'c_len' [288, 296) 'last_head' [352, 360) 'expected_size' [416, 424) 'chunk_size' [480, 496) 'stream_head' <== Memory access at offset 424 partially underflows this variable [544, 560) 'md5_stored' [608, 752) 'fdin_stat' HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext (longjmp and C++ exceptions *are* supported) SUMMARY: stack-buffer-overflow ../../../../libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:545 in __interceptor_read Shadow bytes around the buggy address: 0x10007ba326c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10007ba326d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10007ba326e0: 00 00 f1 f1 f1 f1 01 f4 f4 f4 f2 f2 f2 f2 01 f4 0x10007ba326f0: f4 f4 f2 f2 f2 f2 00 f4 f4 f4 f2 f2 f2 f2 00 f4 0x10007ba32700: f4 f4 f2 f2 f2 f2 00 f4 f4 f4 f2 f2 f2 f2 00 f4 =>0x10007ba32710: f4 f4 f2 f2 f2 f2 00[f4]f4 f4 f2 f2 f2 f2 00 00 0x10007ba32720: f4 f4 f2 f2 f2 f2 00 00 f4 f4 f2 f2 f2 f2 00 00 0x10007ba32730: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x10007ba32740: f4 f4 f3 f3 f3 f3 00 00 00 00 00 00 00 00 00 00 0x10007ba32750: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 04 f4 0x10007ba32760: f4 f4 f2 f2 f2 f2 04 f4 f4 f4 f2 f2 f2 f2 00 f4 Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Heap right redzone: fb Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack partial redzone: f4 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb
testcase:https://github.com/bestshow/p0cs/blob/master/stack-buffer-overflow-in-get_fileinfo-lrzip979 Credit: ADLab of Venustech
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Fixed in f12c4a3
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on lrzip version 0.631
testcase:https://github.com/bestshow/p0cs/blob/master/stack-buffer-overflow-in-get_fileinfo-lrzip979
Credit: ADLab of Venustech
The text was updated successfully, but these errors were encountered: