Ubuntu Security Notice USN-805-1
20th July, 2009
ruby1.8, ruby1.9 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 9.04
- Ubuntu 8.10
- Ubuntu 8.04 LTS
- Ubuntu 6.06 LTS
Software description
- ruby1.8
- ruby1.9
Details
It was discovered that Ruby did not properly validate certificates. An
attacker could exploit this and present invalid or revoked X.509
certificates. (CVE-2009-0642)
It was discovered that Ruby did not properly handle string arguments that
represent large numbers. An attacker could exploit this and cause a denial
of service. (CVE-2009-1904)
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 9.04:
- ruby1.8 1.8.7.72-3ubuntu0.1
- ruby1.9 1.9.0.2-9ubuntu1.1
- libruby1.8 1.8.7.72-3ubuntu0.1
- libruby1.9 1.9.0.2-9ubuntu1.1
- Ubuntu 8.10:
- ruby1.8 1.8.7.72-1ubuntu0.2
- ruby1.9 1.9.0.2-7ubuntu1.2
- libruby1.8 1.8.7.72-1ubuntu0.2
- libruby1.9 1.9.0.2-7ubuntu1.2
- Ubuntu 8.04 LTS:
- ruby1.8 1.8.6.111-2ubuntu1.3
- libruby1.8 1.8.6.111-2ubuntu1.3
- Ubuntu 6.06 LTS:
- ruby1.8 1.8.4-1ubuntu1.7
- libruby1.8 1.8.4-1ubuntu1.7
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system upgrade is sufficient to effect the
necessary changes.