SB2015120208 - Remote code execution in PCRE
Published: December 2, 2015 Updated: July 20, 2022
Security Bulletin ID
SB2015120208
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2015-8381)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the compile_regex() function in pcre_compile.c in PCRE when handling related patterns with certain group references. A remote attacker can use a crafted regular expression to trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.
References
- 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