Published: 30/12/2011 Updated: 12/01/2021

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

JRuby prior to 1.6.5.1 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent malicious users to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

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Debian Bug report logs - #686867 jruby: CVE-2011-4838 Package: jruby; Maintainer for jruby is Debian Java Maintainers <pkg-java-maintainers@listsaliothdebianorg>; Source for jruby is src:jruby (PTS, buildd, popcon) Reported by: Moritz Muehlenhoff <jmm@inutilorg> Date: Thu, 6 Sep 2012 20:09:01 UTC Severity: grav ...

CWE-400 http://www.ocert.org/advisories/ocert-2011-003.html http://www.kb.cert.org/vuls/id/903934 http://www.nruns.com/_downloads/advisory28122011.pdf http://secunia.com/advisories/47407 http://jruby.org/2011/12/27/jruby-1-6-5-1.html http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html http://rhn.redhat.com/errata/RHSA-2012-1232.html http://secunia.com/advisories/50084 http://security.gentoo.org/glsa/glsa-201207-06.xml https://exchange.xforce.ibmcloud.com/vulnerabilities/72019 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686867 https://nvd.nist.gov https://www.kb.cert.org/vuls/id/903934

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CVE-2011-4838

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