Detections
Analytics
OpenSSH < 6.6 Multiple Remote Restriction Bypass Vulnerability
high Nessus Network Monitor Plugin ID 8169
Synopsis
The remote SSH service may be affected by multiple restriction bypass vulnerabilities.Description
Versions of OpenSSH server before 6.6 are unpatched for multiple restriction bypass vulnerabilities:- A vulnerability exists related to wildcard usage in the 'AcceptEnv' configuration setting within sshd_config. This could be leveraged by an attacker to bypass environment restrictions via a specially crafted request.
Note: NNM has solely relied on the banner of the SSH client to perform this check. Any backported patches or workarounds such as recompiling or edited configurations are not observable through the banner. (CVE-2014-2532)
- The hash_buffer function in schnorr.c in OpenSSH through 6.4, when Makefile.inc is modified to enable the J-PAKE protocol, does not initialize certain data structures, which might allow remote attackers to cause a denial of service (memory corruption) or have unspecified other impact via vectors that trigger an error condition. (CVE-2014-1692)
Solution
Upgrade to OpenSSH version 6.6 or later.See Also
Plugin Details
Severity: High
ID: 8169
Family: SSH
Published: 3/24/2014
Updated: 3/6/2019
Risk Information
VPR
Risk Factor: Medium
Score: 5.3
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS v3
Risk Factor: High
Base Score: 7.3
Temporal Score: 6.4
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/a:openbsd:openssh
Patch Publication Date: 3/21/2014
Vulnerability Publication Date: 3/21/2014
Reference Information
CVE: CVE-2014-1692, CVE-2014-2532