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AUSCERT External Security Bulletin Redistribution
ESB-2014.2069
USN-2397-1: Ruby vulnerabilities
6 November 2014
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AusCERT Security Bulletin Summary
---------------------------------
Product: ruby
Publisher: Ubuntu
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Windows
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2014-8080 CVE-2014-4975
Original Bulletin:
http://www.ubuntu.com/usn/usn-2397-1/
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running ruby check for an updated version of the software for their
operating system.
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USN-2397-1: Ruby vulnerabilities
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.
References
CVE-2014-4975, CVE-2014-8080
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