CVE-2015-2327: Buffer Overflow
First published: Wed Dec 02 2015(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PCRE (Perl Compatible Regular Expressions) | <=8.35 |
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Reference Links
- http://rhn.redhat.com/errata/RHSA-2016-2750.html
- http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
- http://www.fortiguard.com/advisory/FG-VD-15-010/
- http://www.openwall.com/lists/oss-security/2015/11/29/1
- http://www.securityfocus.com/bid/74924
- https://bugs.exim.org/show_bug.cgi?id=1503
- https://jira.mongodb.org/browse/SERVER-17252
Frequently Asked Questions
What is the severity of CVE-2015-2327?
CVE-2015-2327 has a severity rating that can lead to a denial of service due to a segmentation fault.
How do I fix CVE-2015-2327?
To fix CVE-2015-2327, upgrade to PCRE version 8.36 or later.
What causes the vulnerability in CVE-2015-2327?
CVE-2015-2327 is caused by mishandling of certain internal recursive back references in specific regular expression patterns.
Who can exploit CVE-2015-2327?
Remote attackers can exploit CVE-2015-2327 by sending crafted regular expressions to vulnerable PCRE versions.
What systems are affected by CVE-2015-2327?
CVE-2015-2327 affects systems using PCRE versions prior to 8.36.
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/weakness
- agent/severity
- agent/last-modified-date
- agent/author
- agent/event
- agent/description
- agent/first-publish-date
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/pcre
- canonical/pcre (perl compatible regular expressions)
- version/pcre (perl compatible regular expressions)/8.35