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CVE Database

CVE-2011-1530

Impact: Moderate
Public: 2011-12-06
Bugzilla: 753748: CVE-2011-1530 krb5 (krb5kdc): NULL pointer dereference in the TGS handling (MITKRB5-SA-2011-007)

Details

The MITRE CVE dictionary describes this issue as:

The process_tgs_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.9 through 1.9.2 allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted TGS request that triggers an error other than the KRB5_KDB_NOENTRY error.

Find out more about CVE-2011-1530 from the MITRE CVE dictionary and NIST NVD.

Statement

Not vulnerable. This issue did not affect the versions of krb5 as shipped with Red Hat Enterprise Linux 4 and 5.

CVSS v2 metrics

Base Score: 4.0
Base Metrics: AV:N/AC:L/Au:S/C:N/I:N/A:P
Access Vector: Network
Access Complexity: Low
Authentication: Single Instance
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 (krb5) RHSA-2011:1790 December 06, 2011

External References

http://web.mit.edu/Kerberos/advisories/MITKRB5-SA-2011-007.txt

Acknowledgements

Red Hat would like to thank the MIT Kerberos project for reporting this issue.

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