Disclosure of potentially sensitive timing information in OpenSSH - #VU254
Published: August 2, 2016 / Updated: August 22, 2016
Vulnerability identifier: #VU254
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenSSH
Affected software:
OpenSSH
OpenSSH
Detailed vulnerability description
The vulnerability allows a remote attacker to obtain potentially sensitive timing information.
The vulnerability exists in OpenSSH. A remote attacker can detect timing differences in the ssh(1) and sshd(8) MAC verification for Encrypt-then-MAC (EtM) mode transport MAC algorithms.
Successful exploitation of this vulnerability may result in disclosure of system information.
Remediation
Install the latest version of OpenSSH 7.3.