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[ GLSA 201207-06 ] JRuby: Denial of Service
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PostPosted: Tue Jul 10, 2012 4:26 am    Post subject: [ GLSA 201207-06 ] JRuby: Denial of Service Reply with quote

Gentoo Linux Security Advisory

Title: JRuby: Denial of Service (GLSA 201207-06)
Severity: normal
Exploitable: remote
Date: July 09, 2012
Bug(s): #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: dev-java/jruby
Vulnerable: < 1.6.5.1
Unaffected: >= 1.6.5.1
Architectures: 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:
Code:
# emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-java/jruby-1.6.5.1"
   


References

CVE-2011-4838
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