CVE-2015-8386

high-risk
Published 2015-12-02

PCRE before 8.38 mishandles the interaction of lookbehind assertions and mutually recursive subpatterns, which allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

Do I need to act?

~
7.5% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (4)

Php
Perl Compatible Regular Expression Library

Affected Vendors

Php Fedoraproject Pcre Oracle

References (26)

Third Party Advisory http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174931.ht...
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1025.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-2750.html
Broken Link http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
Third Party Advisory http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
Mailing List http://www.openwall.com/lists/oss-security/2015/11/29/1
Third Party Advisory http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.h...
Third Party Advisory http://www.securityfocus.com/bid/82990
Third Party Advisory https://access.redhat.com/errata/RHSA-2016:1132
Third Party Advisory https://bto.bluecoat.com/security-advisory/sa128
Third Party Advisory https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c...
Third Party Advisory https://security.gentoo.org/glsa/201607-02
https://security.netapp.com/advisory/ntap-20230216-0002/
Third Party Advisory http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174931.ht...
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1025.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-2750.html
Broken Link http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
Third Party Advisory http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
Mailing List http://www.openwall.com/lists/oss-security/2015/11/29/1
Third Party Advisory http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.h...
and 6 more references
52
/ 100
high-risk
Severity 32/34 · Critical
Exploitability 10/34 · Low
Exposure 10/34 · Low