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CVE-2011-0281

5.0 · MEDIUM

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 (f…

Published Feb 10, 2011mitCWE-310EPSS 4.20%

Overview

CVE-2011-0281 is a medium-severity vulnerability affecting mit kerberos. It was published on February 10, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from mit. Update kerberos to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Reflists.opensuse.org/opensuse-security-announce/2011-02/msg00004.htmlRefmailman.mit.edu/pipermail/kerberos/2010-December/016800.htmlRefsecunia.com/advisories/43260Refsecunia.com/advisories/43273Refsecunia.com/advisories/43275Refsecunia.com/advisories/46397Refsecurityreason.com/securityalert/8073Refweb.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txtRefwww.mandriva.com/security/advisories?name=MDVSA-2011:024Refwww.mandriva.com/security/advisories?name=MDVSA-2011:025

How CyberStrike helps

Frequently asked questions

What is CVE-2011-0281?

CVE-2011-0281 is a medium-severity vulnerability affecting mit kerberos. It was published on February 10, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2011-0281?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-0281?

Check the references section for vendor advisories and patches from mit. Update kerberos to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-0281?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-0281 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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