#VU65555 Heap-based buffer overflow in PCRE and PCRE2 - CVE-2015-8381
Vulnerability identifier: #VU65555
Vulnerability risk: High
CVSSv4.0: 8.1 [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:
CWE-ID:
CWE-122
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
PCRE
Universal components / Libraries /
Libraries used by multiple products
PCRE2
Universal components / Libraries /
Libraries used by multiple products
Vendor: PCRE
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.
Mitigation
Install update from vendor's website.
Vulnerable software versions
PCRE: 8.00 - 8.37
PCRE2: 10.00 - 10.10
External links
https://rhn.redhat.com/errata/RHSA-2016-2750.html
https://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup
https://www.openwall.com/lists/oss-security/2015/11/29/1
https://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
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
