#VU2075 Buffer overflow in OpenSSH - CVE-2016-10012

Vulnerability identifier: #VU2075

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2016-10012

CWE-ID: CWE-119

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
OpenSSH

Software vendor:
OpenSSH

The vulnerability allows a local user to execute arbitrary code on vulnerable system with root privileges.

The vulnerability exists in sshd due to a flaw in boundary checks in the shared memory manager that may be skipped by some optimizing compilers. A local user can trigger memory corruption and execute arbitrary code with root privileges. The issue is related to m_zback and m_zlib data structures.

Successful exploitation of this vulnerability may allow a local user to elevate privileges.

Install the latest version of OpenSSH 7.4.

• https://www.openssh.com/txt/release-7.4
• https://github.com/openbsd/src/commit/3095060f479b86288e31c79ecbc5131a66bcd2f9
• http://www.openwall.com/lists/oss-security/2016/12/19/2