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CVE-2011-4838

Published Dec 30, 2011 jruby CWE-400

Overview

CVE-2011-4838 is a known-severity vulnerability affecting jruby jruby. It was published on December 30, 2011.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from jruby. Update jruby to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected Products

Vendor Product Versions Status
jruby jruby >= 0, < 1.6.5.1 Affected

References

Ref archives.neohapsis.com/archives/bugtraq/2011-12/0181.html Ref jruby.org/2011/12/27/jruby-1-6-5-1.html Ref rhn.redhat.com/errata/RHSA-2012-1232.html Ref secunia.com/advisories/47407 Ref secunia.com/advisories/50084 Ref security.gentoo.org/glsa/glsa-201207-06.xml Ref www.kb.cert.org/vuls/id/903934 Ref www.nruns.com/_downloads/advisory28122011.pdf Ref www.ocert.org/advisories/ocert-2011-003.html Ref exchange.xforce.ibmcloud.com/vulnerabilities/72019

Frequently Asked Questions

What is CVE-2011-4838?

CVE-2011-4838 is a known-severity vulnerability affecting jruby jruby. It was published on December 30, 2011.

How severe is CVE-2011-4838?

CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.

How do I fix or remediate CVE-2011-4838?

Check the references section for vendor advisories and patches from jruby. Update jruby to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-4838?

CyberStrike's AI-powered security agents can automatically detect CVE-2011-4838 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.

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