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