CVE Database


Impact: Moderate
Public: 2011-12-28
Bugzilla: 750564: CVE-2011-4815 ruby: hash table collisions CPU usage DoS (oCERT-2011-003)


The MITRE CVE dictionary describes this issue as:

Ruby (aka CRuby) before 1.8.7-p357 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.

Find out more about CVE-2011-4815 from the MITRE CVE dictionary and NIST NVD.

CVSS v2 metrics

Base Score: 5.0
Base Metrics: AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector: Network
Access Complexity: Low
Authentication: None
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat security errata

Platform Errata Release Date
Red Hat Enterprise Linux version 4 (ruby) RHSA-2012:0070 January 30, 2012
Red Hat Enterprise Linux version 5 (ruby) RHSA-2012:0070 January 30, 2012
Red Hat Enterprise Linux version 6 (ruby) RHSA-2012:0069 January 30, 2012

External References


Red Hat would like to thank oCERT for reporting this issue. oCERT acknowledges Julian Wälde and Alexander Klink as the original reporters.

This page is generated automatically and has not been checked for errors or omissions.

For clarification or corrections please contact the Red Hat Security Response Team.