https://bugs.exim.org/show_bug.cgi?id=2765
Bug ID: 2765 Summary: pcretest.c in PCRE 8.44 allows remote attackers to cause a denial of service (heap-based buffer overflow) Product: PCRE Version: 8.44 Hardware: x86-64 OS: Linux Status: NEW Severity: bug Priority: medium Component: Documentation Assignee: philip.ha...@gmail.com Reporter: 670605...@qq.com CC: pcre-dev@exim.org ==33844==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x62d000012400 at pc 0x0000004023a7 bp 0x7ffd101463a0 sp 0x7ffd10146390 READ of size 1 at 0x62d000012400 thread T0 #0 0x4023a6 in pchars /pcre-8.44/pcretest.c:2045 #1 0x402a00 in callout /pcre-8.44/pcretest.c:2272 #2 0x441f37 in internal_dfa_exec /pcre-8.44/pcre_dfa_exec.c:3080 #3 0x444121 in pcre_dfa_exec /pcre-8.44/pcre_dfa_exec.c:3618 #4 0x40d1b1 in main /pcre-8.44/pcretest.c:5214 #5 0x7f917c87983f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2083f) #6 0x4019d8 in _start (/pcre-8.44/pcretest+0x4019d8) 0x62d000012400 is located 0 bytes to the right of 32768-byte region [0x62d00000a400,0x62d000012400) allocated by thread T0 here: #0 0x7f917ccbb961 in realloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98961) #1 0x40a3d0 in main /pcre-8.44/pcretest.c:4593 #2 0x7f917c87983f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2083f) SUMMARY: AddressSanitizer: heap-buffer-overflow /pcre-8.44/pcretest.c:2045 pchars Shadow bytes around the buggy address: 0x0c5a7fffa430: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c5a7fffa440: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c5a7fffa450: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c5a7fffa460: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c5a7fffa470: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =>0x0c5a7fffa480:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c5a7fffa490: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c5a7fffa4a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c5a7fffa4b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c5a7fffa4c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c5a7fffa4d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 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 ==33844==ABORTING -- You are receiving this mail because: You are on the CC list for the bug. -- ## List details at https://lists.exim.org/mailman/listinfo/pcre-dev