https://bugs.exim.org/show_bug.cgi?id=1993
Bug ID: 1993
Summary: PCRE2 10.23-RC1 - Out of bounds read in
internal_dfa_match() #2
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 957
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https://bugs.exim.org/attachment.cgi?id=957&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_internal_dfa_match /dev/null
ASAN output:
==20212==ERROR: AddressSanitizer: SEGV on unknown address 0x7f74299e629f (pc
0x7f7428954452 bp 0x7ffc89688290 sp 0x7ffc8967eb40 T0)
==20212==The signal is caused by a READ memory access.
#0 0x7f7428954451 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2079:25
#1 0x7f742893e7cf in pcre2_dfa_match_8
XYZ/pcre/src/pcre2_dfa_match.c:3563:8
#2 0x4ef5f7 in process_data XYZ/pcre/src/pcre2test.c:6561:7
#3 0x4ef5f7 in main XYZ/pcre/src/pcre2test.c:7788
#4 0x7f74277f882f 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_dfa_match.c:2079:25 in
internal_dfa_match
==20212==ABORTING
Regards,
Kamil Frankowicz
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