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png2swf png_load() access except #32

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lcatro opened this issue Jun 11, 2017 · 0 comments
Closed

png2swf png_load() access except #32

lcatro opened this issue Jun 11, 2017 · 0 comments

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@lcatro
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lcatro commented Jun 11, 2017

Crash : https://raw.githubusercontent.com/lcatro/My_PoC/master/swftools/png2swf_-r_-z_-j_10_-s_50_-o_dev_null__crash_png_load_453ea0

Trigger : ./png2swf -r -z -j 10 -s 50 -o /dev/null swftools/png2swf_-r_-z_-j_10_-s_50_-o_dev_null__crash_png_load_453ea0

Crash Detail :

fuzzer@ub16x64:~/fuzzing/swftools/src$ ./png2swf -r -z -j 10 -s 50 -o /dev/null swftools/png2swf_-r_-z_-j_10_-s_50_-o_dev_null__crash_png_load_453ea0
ASAN:SIGSEGV

==19412==ERROR: AddressSanitizer: SEGV on unknown address 0x7fb5e1f00002 (pc 0x000000412a8a bp 0x0000fffffff0 sp 0x7ffe7e1c32e0 T0)
#0 0x412a89 in png_load (/home/fuzzer/fuzzing/swftools/src/png2swf+0x412a89)
#1 0x403101 in MovieAddFrame (/home/fuzzer/fuzzing/swftools/src/png2swf+0x403101)
#2 0x404054 in main (/home/fuzzer/fuzzing/swftools/src/png2swf+0x404054)
#3 0x7fb5e4dfb82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#4 0x401f28 in _start (/home/fuzzer/fuzzing/swftools/src/png2swf+0x401f28)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV ??:0 png_load
==19412==ABORTING

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