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CVE Database

CVE-2011-0281

Impact: Important
Public: 2011-02-08
Bugzilla: 668719: CVE-2011-0281 krb5: KDC hang when using LDAP backend caused by special principal name (MITKRB5-SA-2011-002)
IAVA: 2011-A-0147

Details

The MITRE CVE dictionary describes this issue as:

The unparse implementation in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.6.x through 1.9, when an LDAP backend is used, allows remote attackers to cause a denial of service (file descriptor exhaustion and daemon hang) via a principal name that triggers use of a backslash escape sequence, as demonstrated by a \n sequence.

Find out more about CVE-2011-0281 from the MITRE CVE dictionary and NIST NVD.

Statement

This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 3 or 4 as they did not include support for the LDAP backend.

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 5 (krb5) RHSA-2011:0199 February 08, 2011
Red Hat Enterprise Linux version 6 (krb5) RHSA-2011:0200 February 08, 2011

External References

Acknowledgements

Red Hat would like to thank the MIT Kerberos project for reporting this issue. Upstream acknowledges Kevin Longfellow of Oracle Corporation as the original reporter.

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.