CVE-2015-8381: Buffer Overflow
First published: Wed Dec 02 2015(Updated: )
The compile_regex function in pcre_compile.c in PCRE before 8.38 and pcre2_compile.c in PCRE2 before 10.2x mishandles the /(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R'))))/ and /(?J:(?|(:(?|(?'R')(\z(?|(?'R')(\k'R')|((?'R')))k'R')|((?'R')))H'Ak'Rf)|s(?'R')))/ patterns, and related patterns with certain group references, which allows remote attackers to cause a denial of service (heap-based buffer overflow) 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 |
|---|---|---|
| redhat/pcre | <8.38 | 8.38 |
| PCRE (Perl Compatible Regular Expressions) | <=8.37 |
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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.openwall.com/lists/oss-security/2015/11/29/1
- http://www.securityfocus.com/bid/76187
- https://access.redhat.com/errata/RHSA-2016:1132
- https://bto.bluecoat.com/security-advisory/sa128
- https://bugs.exim.org/show_bug.cgi?id=1667
- https://bugs.exim.org/show_bug.cgi?id=1672
- https://security.gentoo.org/glsa/201607-02
- https://access.redhat.com/security/cve/CVE-2015-8384
- https://access.redhat.com/security/cve/CVE-2015-8392
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1287719
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1287721
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1287720
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1287722
- https://access.redhat.com/security/cve/CVE-2015-8381
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1256449
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1287711#c5
- http://vcs.pcre.org/pcre?view=revision&revision=1594
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1287711#c7
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1287690
- https://rhn.redhat.com/errata/RHSA-2016-2750.html
- https://bugzilla.redhat.com/show_bug.cgi?id=1287711
Frequently Asked Questions
What is the severity of CVE-2015-8381?
CVE-2015-8381 has been classified as a medium severity vulnerability.
How do I fix CVE-2015-8381?
To fix CVE-2015-8381, upgrade PCRE to version 8.38 or later.
What software is affected by CVE-2015-8381?
CVE-2015-8381 affects PCRE versions before 8.38 and PCRE2 versions before 10.2x.
What types of attacks can exploit CVE-2015-8381?
CVE-2015-8381 can potentially be exploited through crafted regular expressions that trigger a denial of service.
Is CVE-2015-8381 a remote vulnerability?
CVE-2015-8381 is not classified as a remote vulnerability, but it can be exploited through local applications that use vulnerable regex patterns.
- agent/type
- agent/softwarecombine
- agent/severity
- agent/weakness
- agent/references
- agent/author
- agent/description
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2015-8381
- agent/software-canonical-lookup
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/redhat
- vendor/pcre
- canonical/pcre (perl compatible regular expressions)
- version/pcre (perl compatible regular expressions)/8.37