JRuby: Denial of Service A hash collision vulnerability in JRuby allows remote attackers to cause a Denial of Service condition. jruby July 09, 2012 July 09, 2012: 1 396305 remote 1.6.5.1 1.6.5.1

JRuby is a Java-based Ruby interpreter implementation.

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

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

There is no known workaround at this time.

All JRuby users should upgrade to the latest version:

# emerge --sync # emerge --ask --oneshot --verbose ">=dev-java/jruby-1.6.5.1" CVE-2011-4838 ackle ackle