Description
PCRE before 8.36 mishandles the /((?(R)a|(?1)))+/ pattern and related patterns with certain recursion, 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.
Metrics
CVSS 2.0 7.5/10
AV:N/AC:L/Au:N/C:P/I:P/A:PWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://rhn.redhat.com/errata/RHSA-2016-1025.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markupExploit
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
- http://www.fortiguard.com/advisory/FG-VD-15-014/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/11/29/1Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
- http://www.securityfocus.com/bid/74924
- https://bugs.exim.org/show_bug.cgi?id=1515Exploit
- https://jira.mongodb.org/browse/SERVER-17252Third Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-1025.html
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markupExploit
- http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
- http://www.fortiguard.com/advisory/FG-VD-15-014/Third Party Advisory
- http://www.openwall.com/lists/oss-security/2015/11/29/1Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.htmlThird Party Advisory
- http://www.securityfocus.com/bid/74924
- https://bugs.exim.org/show_bug.cgi?id=1515Exploit
- https://jira.mongodb.org/browse/SERVER-17252Third Party Advisory
Timeline
- Published
- Dec 2, 2015
- Last modified
- Jun 17, 2026
- NVD status
- Modified