CVE-2011-4838

MediumCVSS 5.0/10Last modified Jun 16, 2026

Description

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

Metrics

CVSS 2.0 5.0/10AV:N/AC:L/Au:N/C:N/I:N/A:P

Weakness enumeration

CWE-400

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.htmlBroken Link
http://jruby.org/2011/12/27/jruby-1-6-5-1.htmlVendor Advisory
http://rhn.redhat.com/errata/RHSA-2012-1232.htmlBroken Link
http://secunia.com/advisories/47407Third Party Advisory
http://secunia.com/advisories/50084Third Party Advisory
http://security.gentoo.org/glsa/glsa-201207-06.xmlThird Party Advisory
http://www.kb.cert.org/vuls/id/903934Third Party Advisory, US Government Resource
http://www.nruns.com/_downloads/advisory28122011.pdfThird Party Advisory
http://www.ocert.org/advisories/ocert-2011-003.htmlThird Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/72019Third Party Advisory, VDB Entry
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.htmlBroken Link
http://jruby.org/2011/12/27/jruby-1-6-5-1.htmlVendor Advisory
http://rhn.redhat.com/errata/RHSA-2012-1232.htmlBroken Link
http://secunia.com/advisories/47407Third Party Advisory
http://secunia.com/advisories/50084Third Party Advisory
http://security.gentoo.org/glsa/glsa-201207-06.xmlThird Party Advisory
http://www.kb.cert.org/vuls/id/903934Third Party Advisory, US Government Resource
http://www.nruns.com/_downloads/advisory28122011.pdfThird Party Advisory
http://www.ocert.org/advisories/ocert-2011-003.htmlThird Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/72019Third Party Advisory, VDB Entry

Timeline

Published: Dec 30, 2011
Last modified: Jun 16, 2026
NVD status: Modified

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