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swfcombine swf_Relocate() Null-pointer access #26

lcatro opened this issue Jun 11, 2017 · 0 comments


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commented Jun 11, 2017

Crash :

Trigger : ./swfcombine -t -m -G -B -v -z -f -o /dev/null swftools/swfcombine_-t-m-G-B-v-z-f-o_dev_null__swf_Relocate_42B491

Crash Detail :

fuzzer@ub16x64:~/fuzzing/swftools/src$ ./swfcombine -t -m -G -B -v -z -f -o /dev/null swftools/swfcombine_-t-m-G-B-v-z-f-o_dev_null__swf_Relocate_42B491
NOTICE Combine [(null)]none and [Frame00]swftools/swfcombine_-t-m-G-B-v-z-f-o_dev_null__swf_Relocate_42B491
NOTICE Slave file attached to named object Frame00 (1).

==18827==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000001 (pc 0x00000040ab6a bp 0x60200000ee30 sp 0x7ffeffe29660 T0)
#0 0x40ab69 in swf_Relocate (/home/fuzzer/fuzzing/swftools/src/swfcombine+0x40ab69)
#1 0x404346 in normalcombine (/home/fuzzer/fuzzing/swftools/src/swfcombine+0x404346)
#2 0x404857 in combine (/home/fuzzer/fuzzing/swftools/src/swfcombine+0x404857)
#3 0x405584 in main (/home/fuzzer/fuzzing/swftools/src/swfcombine+0x405584)
#4 0x7f9a0186982f in __libc_start_main (/lib/x86_64-linux-gnu/
#5 0x401e48 in _start (/home/fuzzer/fuzzing/swftools/src/swfcombine+0x401e48)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV ??:0 swf_Relocate


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