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JRuby: Denial of Service

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 201207-06 / jruby
Release Date July 09, 2012
Latest Revision July 09, 2012: 1
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-java/jruby < 1.6.5.1 >= 1.6.5.1 All supported architectures

Related bugreports: #396305

Synopsis

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

2.  Impact Information

Background

JRuby is a Java-based Ruby interpreter implementation.

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.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All JRuby users should upgrade to the latest version:

Code Listing 3.1: Resolution

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

4.  References



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Page updated July 09, 2012

Summary: This is a Gentoo Linux Security Advisory

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