Detections
Analytics

OpenSSH < 6.7 Security Bypass

medium Nessus Network Monitor Plugin ID 701161

Synopsis

The remote SSH server may be affected by a security bypass error.

Description

The 'verify_host_key' function in sshconnect.c in the client in OpenSSH 6.6 and earlier allows remote servers to trigger the skipping of SSHFP DNS RR checking by presenting an unacceptable HostCertificate.

Solution

Upgrade to OpenSSH 6.x version 6.7 or later.

See Also

http://www.openssh.com/txt/release-6.7

Plugin Details

Severity: Medium

ID: 701161

Family: SSH

Published: 8/21/2019

Updated: 8/21/2019

Risk Information

VPR

Risk Factor: Medium

Score: 4.5

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:U

Vulnerability Information

CPE: cpe:/a:openbsd:openssh

Patch Publication Date: 3/24/2014

Vulnerability Publication Date: 3/24/2014

Reference Information

CVE: CVE-2014-2653

BID: 66459