CVE-2015-2327

PCRE < 8.35 - Denial of Service via Recursive Back Reference Pattern

Title source: llm
STIX 2.1

Description

PCRE before 8.36 mishandles the /(((a\2)|(a*)\g<-1>))*/ pattern and related patterns with certain internal recursive back references, which allows remote attackers to cause a denial of service (segmentation fault) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

References (7)

Core 7
Core References
Mailing List mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2015/11/29/1
Vendor Advisory x_refsource_misc
http://www.fortiguard.com/advisory/FG-VD-15-010/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/74924
Vendor Advisory vendor-advisory x_refsource_redhat
http://rhn.redhat.com/errata/RHSA-2016-2750.html
Exploit x_refsource_confirm
https://bugs.exim.org/show_bug.cgi?id=1503
Various Sources x_refsource_confirm
https://jira.mongodb.org/browse/SERVER-17252

Scores

EPSS 0.0405
EPSS Percentile 89.4%

Details

CWE
CWE-119
Status published
Products (1)
pcre/perl_compatible_regular_expression_library < 8.35
Published Dec 02, 2015
Tracked Since Feb 18, 2026