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CVE-2011-4838 Details

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 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html	CVE	Broken Link
http://jruby.org/2011/12/27/jruby-1-6-5-1.html	CVE	Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2012-1232.html	CVE	Broken Link
http://secunia.com/advisories/47407	CVE	Third Party Advisory
http://secunia.com/advisories/50084	CVE	Third Party Advisory
http://security.gentoo.org/glsa/glsa-201207-06.xml	CVE	Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/72019	CVE	Third Party AdvisoryVDB Entry
http://www.kb.cert.org/vuls/id/903934	CVE	Third Party AdvisoryUS Government Resource
http://www.nruns.com/_downloads/advisory28122011.pdf	CVE	Third Party Advisory
http://www.ocert.org/advisories/ocert-2011-003.html	CVE	Third Party Advisory
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html	[email protected]	Broken Link
http://jruby.org/2011/12/27/jruby-1-6-5-1.html	[email protected]	Vendor Advisory
http://rhn.redhat.com/errata/RHSA-2012-1232.html	[email protected]	Broken Link
http://secunia.com/advisories/47407	[email protected]	Third Party Advisory
http://secunia.com/advisories/50084	[email protected]	Third Party Advisory
http://security.gentoo.org/glsa/glsa-201207-06.xml	[email protected]	Third Party Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/72019	[email protected]	Third Party AdvisoryVDB Entry
http://www.kb.cert.org/vuls/id/903934	[email protected]	Third Party AdvisoryUS Government Resource
http://www.nruns.com/_downloads/advisory28122011.pdf	[email protected]	Third Party Advisory
http://www.ocert.org/advisories/ocert-2011-003.html	[email protected]	Third Party Advisory

see all 20 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-400	Uncontrolled Resource Consumption	[email protected]

Affected Products

Product	Versions
jruby jruby	< 1.6.5.1
CPE cpe:2.3:a:jruby:jruby:::::::: Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	[email protected]
Apr 29, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jan 12, 2021	Modified Analysis	[email protected]
Aug 29, 2017	CVE Modified	[email protected]
Dec 30, 2011	Initial Analysis	[email protected]