Ubuntu Security Notice USN-2397-1
4th November, 2014
ruby1.8, ruby1.9.1, ruby2.0, ruby2.1 vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Several security issues were fixed in Ruby.
Software description
- ruby1.8
– Object-oriented scripting language - ruby1.9.1
– Object-oriented scripting language - ruby2.0
– Object-oriented scripting language - ruby2.1
– Object-oriented scripting language
Details
Will Wood discovered that Ruby incorrectly handled the encodes() function.
An attacker could possibly use this issue to cause Ruby to crash, resulting
in a denial of service, or possibly execute arbitrary code. The default
compiler options for affected releases should reduce the vulnerability to a
denial of service. (CVE-2014-4975)
Willis Vandevanter discovered that Ruby incorrectly handled XML entity
expansion. An attacker could use this flaw to cause Ruby to consume large
amounts of resources, resulting in a denial of service. (CVE-2014-8080)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 14.10:
-
libruby2.1
2.1.2-2ubuntu1.1
-
libruby2.0
2.0.0.484+really457-3ubuntu1.1
-
ruby2.1
2.1.2-2ubuntu1.1
-
ruby2.0
2.0.0.484+really457-3ubuntu1.1
- Ubuntu 14.04 LTS:
-
libruby2.0
2.0.0.484-1ubuntu2.1
-
ruby1.9.1
1.9.3.484-2ubuntu1.1
-
libruby1.9.1
1.9.3.484-2ubuntu1.1
-
ruby2.0
2.0.0.484-1ubuntu2.1
- Ubuntu 12.04 LTS:
-
ruby1.8
1.8.7.352-2ubuntu1.5
-
ruby1.9.1
1.9.3.0-1ubuntu2.9
-
libruby1.8
1.8.7.352-2ubuntu1.5
-
libruby1.9.1
1.9.3.0-1ubuntu2.9
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.