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Gentoo Linux Security Advisory GLSA 200405-23 |
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http://security.gentoo.org/ |
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|
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Severity: High |
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Title: Heimdal: Kerberos 4 buffer overflow in kadmin |
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Date: May 27, 2004 |
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Bugs: #50208 |
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ID: 200405-23 |
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|
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|
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Synopsis |
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======== |
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|
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A possible buffer overflow in the Kerberos 4 component of Heimdal has |
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been discovered. |
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|
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Background |
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========== |
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|
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Heimdal is a free implementation of Kerberos. |
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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/heimdal < 0.6.2 >= 0.6.2 |
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|
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Description |
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=========== |
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|
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A buffer overflow was discovered in kadmind, a server for |
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administrative access to the Kerberos database. |
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|
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Impact |
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====== |
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|
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By sending a specially formatted message to kadmind, a remote attacker |
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may be able to crash kadmind causing a denial of service, or execute |
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arbitrary code with the permissions of the kadmind process. |
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|
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Workaround |
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========== |
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|
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For a temporary workaround, providing you do not require Kerberos 4 |
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support, you may turn off Kerberos 4 kadmin by running kadmind with the |
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--no-kerberos4 option. |
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|
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Resolution |
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========== |
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|
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All Heimdal users should upgrade to the latest stable version: |
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|
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# emerge sync |
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|
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# emerge -pv ">=app-crypt/heimdal-0.6.2" |
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# emerge ">=app-crypt/heimdal-0.6.2" |
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|
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References |
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========== |
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|
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[ 1 ] Heimdal 0.6.2 Release Notice |
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http://www.pdc.kth.se/heimdal/advisory/2004-05-06/ |
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[ 2 ] CAN-2004-0434 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0434 |
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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-200405-23.xml |
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|
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Concerns? |
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========= |
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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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|
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Copyright 2004 Gentoo Technologies, Inc; referenced text |
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belongs to its owner(s). |
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|
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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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|
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http://creativecommons.org/licenses/by-sa/1.0 |