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CVE Database

CVE-2011-3149

Impact: Low
Public: 2011-10-24
Bugzilla: 746620: CVE-2011-3149 pam (pam_env): Infinite loop by expanding certain arguments

Details

The MITRE CVE dictionary describes this issue as:

The _expand_arg function in the pam_env module (modules/pam_env/pam_env.c) in Linux-PAM (aka pam) before 1.1.5 does not properly handle when environment variable expansion can overflow, which allows local users to cause a denial of service (CPU consumption).

Find out more about CVE-2011-3149 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue did not affect the versions of pam package as shipped with Red Hat Enterprise Linux 4 and 5.

CVSS v2 metrics

Base Score: 1.2
Base Metrics: AV:L/AC:H/Au:N/C:N/I:N/A:P
Access Vector: Local
Access Complexity: High
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 6 (pam) RHSA-2013:0521 February 20, 2013

External References

Acknowledgements

Red Hat would like to thank Kees Cook of Google ChromeOS Team for reporting this issue.

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.