Detections
Analytics
Ubuntu 7.04 / 7.10 / 8.04 LTS : ssl-cert vulnerability (USN-612-4)
high Nessus Plugin ID 32358
Synopsis
The remote Ubuntu host is missing a security-related patch.Description
USN-612-1 fixed vulnerabilities in openssl. This update provides the corresponding updates for ssl-cert -- potentially compromised snake-oil SSL certificates will be regenerated.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.
This vulnerability only affects operating systems which (like Ubuntu) are based on Debian. However, other systems can be indirectly affected if weak keys are imported into them.
We consider this an extremely serious vulnerability, and urge all users to act immediately to secure their systems.
(CVE-2008-0166)
== Who is affected ==
Systems which are running any of the following releases :
* Ubuntu 7.04 (Feisty) * Ubuntu 7.10 (Gutsy) * Ubuntu 8.04 LTS (Hardy) * Ubuntu 'Intrepid Ibex' (development): libssl <= 0.9.8g-8 * Debian 4.0 (etch) (see corresponding Debian security advisory)
and have openssh-server installed or have been used to create an OpenSSH key or X.509 (SSL) certificate.
All OpenSSH and X.509 keys generated on such systems must be considered untrustworthy, regardless of the system on which they are used, even after the update has been applied.
This includes the automatically generated host keys used by OpenSSH, which are the basis for its server spoofing and man-in-the-middle protection.
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 ssl-cert package.See Also
Plugin Details
Severity: High
ID: 32358
File Name: ubuntu_USN-612-4.nasl
Version: 1.18
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, cpe:/o:canonical:ubuntu_linux:7.10, p-cpe:/a:canonical:ubuntu_linux:ssl-cert, 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
BID: 29179