GLSA 201207-06: JRuby: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	JRuby: Denial of Service
Date:	07/09/2012
Bugs:	#396305
ID:	201207-06

Synopsis

A hash collision vulnerability in JRuby allows remote attackers to cause a Denial of Service condition.

Background

JRuby is a Java-based Ruby interpreter implementation.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-java/jruby	< 1.6.5.1	>= 1.6.5.1	All supported architectures

Description

JRuby does not properly randomize hash functions to protect against hash collision attacks.

Impact

A remote attacker could send a specially crafted input, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All JRuby users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-java/jruby-1.6.5.1"

References

CVE-2011-4838

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201207-06.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.