MIT Kerberos LDAP descriptor denial of service
|kerberos-ldap-descriptor-dos (65324)||Medium Risk|
MIT Kerberos is vulnerable to a denial of service, caused by a file descriptor leak in the Key Distribution Center (KDC) daemon when configured with an LDAP back end. By sending a specially-crafted request, a remote attacker could exploit this vulnerability to cause the daemon to hang.
Denial of Service
Refer to MITKRB5-SA-2011-002 for patch, upgrade or suggested workaround information. See References.
- MITKRB5-SA-2011-002: KDC denial of service attacks.
- BID-46265: MIT Kerberos KDC LDAP File Descriptor Leak Denial Of Service Vulnerability
- CVE-2011-0281: 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.
- OSVDB ID: 70908: MIT Kerberos 5 Key Distribution Center (KDC) LDAP Backend Unparse Implementation DoS
- RHSA-2011-0199: Important: krb5 security update
- RHSA-2011-0200: Important: krb5 security update
- SA43260: Kerberos Multiple Denial of Service Vulnerabilities
- SA44284: Oracle Solaris Kerberos Multiple Vulnerabilities
- SA46397: VMware ESX / ESXi Server Multiple Vulnerabilities
- SUSE-SR:2011:004: SUSE Security Summary Report
- VUPEN/ADV-2011-0330: MIT Kerberos krb5 Key Distribution Center Denial of Service Vulnerabilities
- MIT Kerberos 5-1.6
- MIT Kerberos 5-1.7
- MIT Kerberos 5-1.8
- MIT Kerberos 5-1.9
- RedHat Enterprise Linux 5 Client Workstation
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 6 Server
- RedHat Enterprise Linux 6 Workstation
- RedHat Enterprise Linux Desktop 6
- RedHat Enterprise Linux EUS 5.6.z
- RedHat Enterprise Linux HPC Node 6
- RedHat Enterprise Linux Long Life 5.6
- RedHat Enterprise Linux Server EUS 6.0.z
Feb 08, 2011
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.