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Last updated: 5/27/2016 3:36:07 AM

CVE Publication rate: 21.13

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Vulnerability Workload Index: 12.72
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National Cyber Awareness System

Vulnerability Summary for CVE-2011-0281

Original release date: 02/10/2011
Last revised: 10/25/2011


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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 5.0 MEDIUM
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: BID
Name: 46265
External Source: VUPEN
Name: ADV-2011-0333
Type: Advisory
External Source: CONFIRM
Name: http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2011-002.txt
Type: Advisory
External Source: BUGTRAQ
Name: 20110208 MITKRB5-SA-2011-002 KDC denial of service attacks [CVE-2011-0281 CVE-2011-0282 CVE-2011-0283]
External Source: SECTRACK
Name: 1025037
External Source: SUSE
Name: SUSE-SR:2011:004
External Source: XF
Name: kerberos-ldap-descriptor-dos(65324)
External Source: BUGTRAQ
Name: 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console
External Source: SREASON
Name: 8073
External Source: REDHAT
Name: RHSA-2011:0199
External Source: REDHAT
Name: RHSA-2011:0200
External Source: MANDRIVA
Name: MDVSA-2011:024
External Source: MLIST
Name: [kerberos] 20101222 LDAP handle unavailable: Can't contact LDAP server
External Source: VUPEN
Name: ADV-2011-0464
External Source: VUPEN
Name: ADV-2011-0347
Type: Advisory
External Source: VUPEN
Name: ADV-2011-0330
Type: Advisory
External Source: CONFIRM
Name: http://www.vmware.com/security/advisories/VMSA-2011-0012.html
External Source: MANDRIVA
Name: MDVSA-2011:025

Technical Details

Vulnerability Type (View All)