https://bugs.exim.org/show_bug.cgi?id=1991
Bug ID: 1991
Summary: PCRE2 10.23-RC1 - Stack overflow in
internal_dfa_match()
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 955
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https://bugs.exim.org/attachment.cgi?id=955&action=edit
POC to trigger stack overflow (pcre2test)
Affected:
- PCRE2 version 10.23-RC1 2016-08-01 (SVN revision: 610)
To reproduce the problem (pcre2test):
pcre2test pcre2_so_internal_dfa_match /dev/null
ASAN output:
==19045==ERROR: AddressSanitizer: stack-overflow on address 0x7ffeb5444dc4 (pc
0x7f54ff2766db bp 0x7ffeb54450f0 sp 0x7ffeb5444ca0 T0)
#0 0x7f54ff2766da in internal_dfa_match XYZ/pcre/src/pcre2_dfa_match.c:375
#1 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#2 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#3 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#4 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#5 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#6 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#7 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#8 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#9 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
##############################################################################
#216 0x7f54ff285d94 in internal_dfa_match
XYZ/pcre/src/pcre2_dfa_match.c:2750:14
#217 0x7f54ff2757cf in pcre2_dfa_match_8
XYZ/pcre/src/pcre2_dfa_match.c:3563:8
#218 0x4ef5f7 in process_data XYZ/pcre/src/pcre2test.c:6561:7
#219 0x4ef5f7 in main XYZ/pcre/src/pcre2test.c:7788
#220 0x7f54fe12f82f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#221 0x41aad8 in _start (/usr/local/bin/pcre2test+0x41aad8)
SUMMARY: AddressSanitizer: stack-overflow XYZ/pcre/src/pcre2_dfa_match.c:375 in
internal_dfa_match
==19045==ABORTING
Regards,
Kamil Frankowicz
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