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Gentoo Linux Security Advisory GLSA 200709-01 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: MIT Kerberos 5: Multiple vulnerabilities |
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Date: September 11, 2007 |
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Bugs: #191301 |
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ID: 200709-01 |
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Synopsis |
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======== |
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|
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Two vulnerabilites have been found in MIT Kerberos 5, which could allow |
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a remote unauthenticated user to execute arbitrary code with root |
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privileges. |
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|
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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. kadmind is the MIT Kerberos 5 administration daemon. |
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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 < 1.5.3-r1 >= 1.5.3-r1 |
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|
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Description |
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=========== |
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|
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A stack buffer overflow (CVE-2007-3999) has been reported in |
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svcauth_gss_validate() of the RPC library of kadmind. Another |
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vulnerability (CVE-2007-4000) has been found in |
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kadm5_modify_policy_internal(), which does not check the return values |
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of krb5_db_get_policy() correctly. |
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|
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Impact |
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====== |
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|
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The RPC related vulnerability can be exploited by a remote |
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unauthenticated attacker to execute arbitrary code with root privileges |
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on the host running kadmind. The second vulnerability requires the |
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remote attacker to be authenticated and to have "modify policy" |
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privileges. It could then also allow for the remote execution of |
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arbitrary code. |
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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-krb5-1.5.3-r1" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2007-3999 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3999 |
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[ 2 ] CVE-2007-4000 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4000 |
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|
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Availability |
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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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http://security.gentoo.org/glsa/glsa-200709-01.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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|
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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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