CVE-2015-8389

moderate-risk
Published 2015-12-02

PCRE before 8.38 mishandles the /(?:|a|){100}x/ pattern and related patterns, which allows remote attackers to cause a denial of service (infinite recursion) 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?

~
2.7% 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 (3)

Php
Perl Compatible Regular Expression Library

Affected Vendors

Php Fedoraproject Pcre

References (16)

Third Party Advisory http://lists.fedoraproject.org/pipermail/package-announce/2016-January/174931.ht...
Release Notes http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
Mailing List http://www.openwall.com/lists/oss-security/2015/11/29/1
Third Party Advisory http://www.securityfocus.com/bid/82990
Permissions Required 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...
Release Notes http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
Mailing List http://www.openwall.com/lists/oss-security/2015/11/29/1
Third Party Advisory http://www.securityfocus.com/bid/82990
Permissions Required 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/
47
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 6/34 · Minimal
Exposure 9/34 · Low