#VU33631 Heap-based buffer overflow - CVE-2016-3074

Vulnerability identifier: #VU33631

Vulnerability risk: High

CVSSv4.0: 8.9 [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:P/U:Amber]

CVE-ID: CVE-2016-3074

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: Yes

Description

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

The vulnerability exists due to a boundary error in Integer signedness error in GD Graphics Library 2.1.1 (aka libgd or libgd2). A remote attacker can use crafted compressed gd2 data 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
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

External links
https://lists.fedoraproject.org/pipermail/package-announce/2016-April/183263.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-May/183724.html
https://lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.html
https://packetstormsecurity.com/files/136757/libgd-2.1.1-Signedness.html
https://rhn.redhat.com/errata/RHSA-2016-2750.html
https://seclists.org/fulldisclosure/2016/Apr/72
https://www.debian.org/security/2016/dsa-3556
https://www.debian.org/security/2016/dsa-3602
https://www.securityfocus.com/archive/1/538160/100/0/threaded
https://www.securityfocus.com/bid/87087
https://www.securitytracker.com/id/1035659
https://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.383127
https://www.ubuntu.com/usn/USN-2987-1
https://github.com/libgd/libgd/commit/2bb97f407c1145c850416a3bfbcc8cf124e68a19
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731
https://security.gentoo.org/glsa/201607-04
https://security.gentoo.org/glsa/201611-22
https://www.exploit-db.com/exploits/39736/

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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. However, proof of concept for this vulnerability is available.