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Gentoo Linux Security Advisory GLSA 200404-09 |
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http://security.gentoo.org |
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Severity: Normal |
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Title: Cross-realm trust vulnerability in Heimdal |
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Date: April 09, 2004 |
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Bugs: #46590 |
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ID: 200404-09 |
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Synopsis |
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======== |
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|
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Heimdal contains cross-realm vulnerability allowing someone with |
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control over a realm to impersonate anyone in the cross-realm trust |
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path. |
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Background |
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========== |
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Heimdal is a free implementation of Kerberos 5. |
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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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app-crypt/heimdal <= 0.6.0 >= 0.6.1 |
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Description |
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=========== |
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|
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Heimdal does not properly perform certain consistency checks for |
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cross-realm requests, which allows remote attackers with control of a |
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realm to impersonate others in the cross-realm trust path. |
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Impact |
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====== |
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|
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Remote attackers with control of a realm may be able to impersonate |
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other users in the cross-realm trust path. |
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Workaround |
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========== |
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A workaround is not currently known for this issue. All users are |
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advised to upgrade to the latest version of the affected package. |
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Resolution |
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========== |
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Heimdal users should upgrade to version 0.6.1 or later: |
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# emerge sync |
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# emerge -pv ">=app-crypt/heimdal-0.6.1" |
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# emerge ">=app-crypt/heimdal-0.6.1" |
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|
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References |
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========== |
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[ 1 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0371 |
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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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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-200404-09.xml |
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Copyright/License |
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================== |
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Copyright 2004 Gentoo Technologies, Inc. |
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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 |
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