Heap-based buffer overflow in PCRE

1) Heap-based buffer overflow

EUVDB-ID: #VU32412

Risk: High

CVSSv3.1: 7.9 [AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-5073

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in Heap-based buffer overflow in the find_fixedlength function in pcre_compile.c in PCRE before 8.38. A remote attacker can use a crafted regular expression with an excess closing parenthesis. to trigger 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

Update to version 8.38.

Vulnerable software versions

PCRE: 8.00 - 8.37

External links

http://rhn.redhat.com/errata/RHSA-2016-1025.html
http://rhn.redhat.com/errata/RHSA-2016-2750.html
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?revision=1609&view=markup
http://vcs.pcre.org/pcre?view=revision&revision=1571
http://www.openwall.com/lists/oss-security/2015/06/26/1
http://www.openwall.com/lists/oss-security/2015/06/26/3
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.securityfocus.com/bid/75430
http://www.securitytracker.com/id/1033154
http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886
http://access.redhat.com/errata/RHSA-2016:1132
http://bugs.exim.org/show_bug.cgi?id=1651
http://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.