Portable OpenSSH < 3.8p1 Multiple Vulnerabilities
medium Nessus Plugin ID 44074
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Synopsis
Remote attackers may be able to cause information to leak from aborted sessions.Description
According to its banner, a version of OpenSSH earlier than 3.8p1 is running on the remote host and is affected by the following issues:- There is an issue in the handling of PAM modules in such versions of OpenSSH. As a result, OpenSSH may not correctly handle aborted conversations with PAM modules. Consequently, that memory may not be scrubbed of sensitive information such as credentials, which could lead to credentials leaking into swap space and core dumps. Other vulnerabilities in PAM modules could come to light because of unpredictable behavior.
- Denial of service attacks are possible when privilege separation is in use. This version of OpenSSH does not properly signal non-privileged processes after session termination when 'LoginGraceTime' is exceeded. This can allow connections to remain open thereby allowing the denial of service when resources are exhausted. (CVE-2004-2069)
Solution
Upgrade to OpenSSH 3.8p1 or later.See Also
https://www.cl.cam.ac.uk/~mgk25/otpw.html#opensshbug
https://bugzilla.mindrot.org/show_bug.cgi?id=632
http://www.nessus.org/u?e86aec66
Plugin Details
Severity: Medium
ID: 44074
File Name: openssh_38p1.nasl
Version: 1.6
Type: remote
Family: Misc.
Published: 10/4/2011
Updated: 11/15/2018
Dependencies: ssh_detect.nasl
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
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: 11/17/2003
Vulnerability Publication Date: 9/2/2003
Reference Information
CVE: CVE-2004-2069