https://bugs.exim.org/show_bug.cgi?id=1981
Bug ID: 1981
Summary: PCRE2 10.23-RC1 - Out of bounds read in match() #3
Product: PCRE
Version: N/A
Hardware: x86-64
OS: Linux
Status: NEW
Severity: bug
Priority: medium
Component: Code
Assignee: ph10@???
Reporter: fumfi.255@???
CC: pcre-dev@???
Created attachment 945
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https://bugs.exim.org/attachment.cgi?id=945&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_match3 /dev/null
ASAN Output:
==11262==ERROR: AddressSanitizer: SEGV on unknown address 0x7fb9109c42a1 (pc
0x7fb90f97b890 bp 0x7ffd1dffe180 sp 0x7ffd1dffdb00 T0)
==11262==The signal is caused by a READ memory access.
#0 0x7fb90f97b88f in match XYZ/pcre/src/pcre2_match.c:5726:19
#1 0x7fb90f95f2b3 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 0x7fb90e7f682f 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:5726:19 in match
==11262==ABORTING
Regards,
Kamil Frankowicz
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