MIT Kerberos perpare_error_as() code execution
|kerberos-perpareerroras-code-execution (66101)||High Risk|
MIT Kerberos could allow a remote attacker to execute arbitrary code on the system, caused by a double-free error in the perpare_error_as() function in the within the Key Distribution Center (KDC) daemon. If the Public Key Cryptography for Initial Authentication (PKINIT) capability is enabled, an attacker could exploit this vulnerability to execute arbitrary code on the system or cause the daemon to crash.
Refer to MITKRB5-SA-2011-003 for patch, upgrade or suggested workaround information. See References.
- MITKRB5-SA-2011-003: KDC vulnerable to double-free when PKINIT enabled.
- BID-46881: MIT Kerberos KDC 'do_as_req.c' Double Free Memory Corruption Vulnerability
- CVE-2011-0284: Double free vulnerability in the prepare_error_as function in do_as_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) 1.7 through 1.9, when the PKINIT feature is enabled, allows remote attackers to cause a denial of service (daemon crash) or possibly execute arbitrary code via an e_data field containing typed data.
- OSVDB ID: 71183: MIT Kerberos 5 Key Distribution Center (KDC) src/kdc/do_as_req.c prepare_error_as() Function AS-REQ Request Double-free Arbitrary Code Execution
- RHSA-2011-0356: Important: krb5 security update
- SA43783: Kerberos KDC prepare_error_as Double-Free Vulnerability
- SUSE-SR:2011:005: SUSE Security Summary Report
- US-CERT VU#943220: MIT KDC vulnerable to double-free when PKINIT enabled
- MIT Kerberos 5-1.7
- RedHat Enterprise Linux 6 Server
- RedHat Enterprise Linux 6 Workstation
- RedHat Enterprise Linux Desktop 6
- RedHat Enterprise Linux HPC Node 6
- RedHat Enterprise Linux Server EUS 6.0.z
Mar 15, 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.