Heap-based buffer overflow in PCRE and PCRE2 - CVE-2015-8381
Published: July 20, 2022
Vulnerability identifier: #VU65555
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2015-8381
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: PCRE
Affected software:
PCRE
PCRE2
PCRE
PCRE2
Detailed vulnerability description
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.
How to mitigate CVE-2015-8381
Install update from vendor's website.
Sources
- 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