CVE-2015-3217

moderate-risk

Published 2016-12-13

PCRE 7.8 and 8.32 through 8.37, and PCRE2 10.10 mishandle group empty matches, which might allow remote attackers to cause a denial of service (stack-based buffer overflow) via a crafted regular expression, as demonstrated by /^(?:(?(1)\\.|([^\\\\W_])?)+)+$/.

Do I need to act?

0.86% chance of exploitation

EPSS score — low 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

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (10)

Pcre

Powerkvm

Pcre2

Pcre

Powerkvm

Affected Vendors

Pcre Ibm

References (20)

http://rhn.redhat.com/errata/RHSA-2016-1025.html

http://rhn.redhat.com/errata/RHSA-2016-2750.html

Patch http://vcs.pcre.org/pcre?view=revision&revision=1566

Third Party Advisory http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886

Mailing List http://www.openwall.com/lists/oss-security/2015/06/03/7

http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.h...

Third Party Advisory http://www.securityfocus.com/bid/75018

https://access.redhat.com/errata/RHSA-2016:1132

Exploit https://bugs.exim.org/show_bug.cgi?id=1638

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1228283