OpenSSH < 4.7 Trusted X11 Cookie Connection Policy Bypass
high Nessus Plugin ID 44078
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Synopsis
Remote attackers may be able to bypass authentication.Description
According to the banner, OpenSSH earlier than 4.7 is running on the remote host. Such versions contain an authentication bypass vulnerability. In the event that OpenSSH cannot create an untrusted cookie for X, for example due to the temporary partition being full, it will use a trusted cookie instead. This allows attackers to violate intended policy and gain privileges by causing their X client to be treated as trusted.Solution
Upgrade to OpenSSH 4.7 or later.See Also
Plugin Details
Severity: High
ID: 44078
File Name: openssh_47.nasl
Version: 1.9
Type: remote
Family: Misc.
Published: 10/4/2011
Updated: 7/16/2018
Dependencies: ssh_detect.nasl
Risk Information
VPR
Risk Factor: Medium
Score: 5.3
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Temporal Vector: E:U/RL:OF/RC:C
Vulnerability Information
CPE: cpe:/a:openbsd:openssh
Exploit Ease: No known exploits are available
Patch Publication Date: 9/5/2007
Vulnerability Publication Date: 9/5/2007
Reference Information
CVE: CVE-2007-4752, CVE-2007-2243
BID: 25628