Date: Sun, 29 Jan 2017 17:52:34 +0100 From: Agostino Sarubbo <ago@...too.org> To: oss-security@...ts.openwall.com Subject: mp3splt: NULL pointer dereference in main (mp3splt.c) Description: mp3splt is a command line utility to split mp3 and ogg files without decoding. A fuzz on it discovered a NULL pointer access. The complete ASan output: # mp3splt -P -f -t 0.1 -a $FILE ==3081==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x00000046dbd9 bp 0x7ffc4cdabdb0 sp 0x7ffc4cdab520 T0) ==3081==The signal is caused by a READ memory access. ==3081==Hint: address points to the zero page. #0 0x46dbd8 in __interceptor_strncmp /tmp/portage/sys-devel/llvm-3.9.0- r1/work/llvm-3.9.0.src/projects/compiler- rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:302 #1 0x51d727 in main /tmp/portage/media- sound/mp3splt-2.6.2/work/mp3splt-2.6.2/src/mp3splt.c:906:11 #2 0x7f8512cf061f in __libc_start_main /var/tmp/portage/sys- libs/glibc-2.22-r4/work/glibc-2.22/csu/libc-start.c:289 #3 0x41ad08 in _init (/usr/bin/mp3splt+0x41ad08) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV /tmp/portage/sys-devel/llvm-3.9.0- r1/work/llvm-3.9.0.src/projects/compiler- rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:302 in __interceptor_strncmp ==3081==ABORTING Affected version: 0.9.2 Fixed version: N/A Commit fix: N/A Credit: This bug was discovered by Agostino Sarubbo of Gentoo. CVE: N/A Reproducer: https://github.com/asarubbo/poc/blob/master/00128-mp3splt-nullptr-main Timeline: 2017-01-01: private report to upstream via mail 2017-01-29: public upstream report on sourceforge 2017-01-29: blog post about the issue Note: This bug was found with American Fuzzy Lop. Permalink: https://blogs.gentoo.org/ago/2017/01/29/mp3splt-null-pointer-dereference-in-mp3splt-c -- Agostino Sarubbo Gentoo Linux Developer
Powered by blists - more mailing lists
Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.
Powered by Openwall GNU/*/Linux - Powered by OpenVZ