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CVE-2011-4838

Good to know:

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Date: December 29, 2011

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.

Language: Ruby

Severity Score

Related Resources (13)

http://www.nruns.com/_downloads/advisory28122011.pdf
http://jruby.org/2011/12/27/jruby-1-6-5-1.html
http://rhn.redhat.com/errata/RHSA-2012-1232.html
http://security.gentoo.org/glsa/glsa-201207-06.xml
http://secunia.com/advisories/50084
http://www.kb.cert.org/vuls/id/903934
http://www.ocert.org/advisories/ocert-2011-003.html
http://secunia.com/advisories/47407
https://exchange.xforce.ibmcloud.com/vulnerabilities/72019
http://archives.neohapsis.com/archives/bugtraq/2011-12/0181.html
https://security-tracker.debian.org/tracker/CVE-2011-4838
https://nvd.nist.gov/vuln/detail/CVE-2011-4838
https://www.mend.io/vulnerability-database/CVE-2011-4838

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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