https://bugs.exim.org/show_bug.cgi?id=1982
Bug ID: 1982
Summary: PCRE2 10.23-RC1 - Out of bounds read in match() #4
Product: PCRE
Version: N/A
Hardware: x86
OS: Linux
Status: NEW
Severity: bug
Priority: medium
Component: Code
Assignee: ph10@???
Reporter: fumfi.255@???
CC: pcre-dev@???
Created attachment 946
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https://bugs.exim.org/attachment.cgi?id=946&action=edit
POC to trigger out of bounds read (pcre2test)
Affected:
- PCRE2 version 10.23-RC1 2016-08-01 (SVN revision: 610)
To reproduce the problem (pcre2test):
pcre2test pcre2_oobr_match4 /dev/null
ASAN Output:
==14905==ERROR: AddressSanitizer: SEGV on unknown address 0x7fca2e9a42a1 (pc
0x7fca2d95bdd2 bp 0x7ffec8667420 sp 0x7ffec8666da0 T0)
==14905==The signal is caused by a READ memory access.
#0 0x7fca2d95bdd1 in match XYZ/pcre/src/pcre2_match.c:5731:21
#1 0x7fca2d93f2b3 in pcre2_match_8 XYZ/pcre/src/pcre2_match.c:6992:8
#2 0x4ef4cc in process_data XYZ/pcre/src/pcre2test.c:6576:9
#3 0x4ef4cc in main XYZ/pcre/src/pcre2test.c:7788
#4 0x7fca2c7d682f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#5 0x41aad8 in _start (/usr/local/bin/pcre2test+0x41aad8)
AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV XYZ/pcre/src/pcre2_match.c:5731:21 in match
==14905==ABORTING
Regards,
Kamil Frankowicz
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