Detections
Analytics
Ubuntu 7.04 / 7.10 / 8.04 LTS : openssh update (USN-612-5)
high Nessus Plugin ID 32359
Synopsis
The remote Ubuntu host is missing one or more security-related patches.Description
Matt Zimmerman discovered that entries in ~/.ssh/authorized_keys with options (such as 'no-port-forwarding' or forced commands) were ignored by the new ssh-vulnkey tool introduced in OpenSSH (see USN-612-2).This could cause some compromised keys not to be listed in ssh-vulnkey's output.
This update also adds more information to ssh-vulnkey's manual page.
A weakness has been discovered in the random number generator used by OpenSSL on Debian and Ubuntu systems. As a result of this weakness, certain encryption keys are much more common than they should be, such that an attacker could guess the key through a brute-force attack given minimal knowledge of the system. This particularly affects the use of encryption keys in OpenSSH, OpenVPN and SSL certificates.
Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Update the affected packages.See Also
Plugin Details
Severity: High
ID: 32359
File Name: ubuntu_USN-612-5.nasl
Version: 1.16
Type: local
Agent: unix
Family: Ubuntu Local Security Checks
Published: 5/16/2008
Updated: 1/19/2021
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.1
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
Vulnerability Information
CPE: cpe:/o:canonical:ubuntu_linux:7.04, p-cpe:/a:canonical:ubuntu_linux:openssh-client-udeb, p-cpe:/a:canonical:ubuntu_linux:ssh-krb5, p-cpe:/a:canonical:ubuntu_linux:openssh-client, p-cpe:/a:canonical:ubuntu_linux:ssh, cpe:/o:canonical:ubuntu_linux:7.10, p-cpe:/a:canonical:ubuntu_linux:openssh-server, p-cpe:/a:canonical:ubuntu_linux:ssh-askpass-gnome, cpe:/o:canonical:ubuntu_linux:8.04:-:lts
Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 5/14/2008
Exploitable With
Core Impact
Reference Information
CVE: CVE-2008-0166, CVE-2008-2285
BID: 29179