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Gentoo Linux Security Advisory GLSA 200504-28 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: Heimdal: Buffer overflow vulnerabilities |
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Date: April 28, 2005 |
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Bugs: #89861 |
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ID: 200504-28 |
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Synopsis |
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======== |
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|
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Buffer overflow vulnerabilities have been found in the telnet client in |
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Heimdal which could lead to execution of arbitrary code. |
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Background |
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========== |
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|
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Heimdal is a free implementation of Kerberos 5 that includes a telnet |
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client program. |
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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 < 0.6.4 >= 0.6.4 |
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Description |
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=========== |
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|
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Buffer overflow vulnerabilities in the slc_add_reply() and |
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env_opt_add() functions have been discovered by Gael Delalleau in the |
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telnet client in Heimdal. |
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Impact |
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====== |
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|
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Successful exploitation would require a vulnerable user to connect to |
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an attacker-controlled host using the telnet client, potentially |
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executing arbitrary code with the permissions of the user running the |
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application. |
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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 Heimdal users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=app-crypt/heimdal-0.6.4" |
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References |
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========== |
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[ 1 ] CAN-2005-0468 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0468 |
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[ 2 ] CAN-2005-0469 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0469 |
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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-200504-28.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 2005 Gentoo Foundation, 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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http://creativecommons.org/licenses/by-sa/2.0 |
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