CVE-2011-4838
UnknownEPSS 4.36%
Last modified
CVE-2011-4838 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 4.36% chance of exploitation in the next 30 days.
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
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Jruby | Jruby | < 1.6.5.1 |
References
- http://jruby.org/2011/12/27/jruby-1-6-5-1.htmlVendor Advisory
- 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://jruby.org/2011/12/27/jruby-1-6-5-1.htmlVendor Advisory
- 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
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2011-4838?
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.
How severe is CVE-2011-4838?
Severity scoring for CVE-2011-4838 is pending analysis. The EPSS model estimates a 4.36% probability of exploitation in the next 30 days.
How do I fix CVE-2011-4838?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2011-4838?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST