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[ GLSA 200704-02 ] MIT Kerberos 5: Arbitrary remote code execution
From: Sune Kloppenborg Jeppesen <jaervosz () gentoo org>
Date: Tue, 3 Apr 2007 23:17:20 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200704-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: MIT Kerberos 5: Arbitrary remote code execution Date: April 03, 2007 Bugs: #171889 ID: 200704-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Multiple vulnerabilities in MIT Kerberos 5 could potentially result in unauthenticated remote root code execution. Background ========== MIT Kerberos 5 is a suite of applications that implement the Kerberos network protocol. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-crypt/mit-krb5 < 1.5.2-r1 >= 1.5.2-r1 Description =========== The Kerberos telnet daemon fails to properly handle usernames allowing unauthorized access to any account (CVE-2007-0956). The Kerberos administration daemon, the KDC and possibly other applications using the MIT Kerberos libraries are vulnerable to the following issues. The krb5_klog_syslog function from the kadm5 library fails to properly validate input leading to a stack overflow (CVE-2007-0957). The GSS-API library is vulnerable to a double-free attack (CVE-2007-1216). Impact ====== By exploiting the telnet vulnerability a remote attacker may obtain access with root privileges. The remaining vulnerabilities may allow an authenticated remote attacker to execute arbitrary code with root privileges. Workaround ========== There is no known workaround at this time. Resolution ========== All MIT Kerberos 5 users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.5.2-r1" References ========== [ 1 ] CVE-2007-0956 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0956 [ 2 ] CVE-2007-0957 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0957 [ 3 ] CVE-2007-1216 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1216 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200704-02.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security () gentoo org or alternatively, you may file a bug at http://bugs.gentoo.org. License ======= Copyright 2007 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5
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- [ GLSA 200704-02 ] MIT Kerberos 5: Arbitrary remote code execution Sune Kloppenborg Jeppesen (Apr 03)