Improper input validation in OpenSSH - CVE-2016-10009

Vulnerability identifier: #VU2015

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear

CVE-ID: CVE-2016-10009

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vendor: OpenSSH

Affected software:
OpenSSH

The vulnerability allows a remote attacker to execute arbitrary code on vulnerable ssh client.

The vulnerability exists due to incorrect handling of data passed to PKCS#11 module within ssh-agent. A remote attacker with control over sshd service can execute arbitrary code on vulnerable client.

Successful exploitation of this vulnerability may allow a remote attacker to execute arbitrary code on vulnerable client system but requires that client is connected to malicious SSH server.

Install the latest version of OpenSSH 7.4.

• https://www.openssh.com/txt/release-7.4
• http://www.openwall.com/lists/oss-security/2016/12/19/2
• https://github.com/openbsd/src/commit/9476ce1dd37d3c3218d5640b74c34c65e5f4efe5