Gentoo Linux Security Advisory 201202-5 - A boundary error in Heimdal could result in execution of arbitrary code. Versions less than 1.5.1-r1 are affected.
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Gentoo Linux Security Advisory GLSA 201202-05
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https://security.gentoo.org/
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Severity: High
Title: Heimdal: Arbitrary code execution
Date: February 22, 2012
Bugs: #396105
ID: 201202-05
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Synopsis
========
A boundary error in Heimdal could result in execution of arbitrary
code.
Background
==========
Heimdal is a free implementation of Kerberos 5.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-crypt/heimdal < 1.5.1-r1 >= 1.5.1-r1
Description
===========
A boundary error in the "encrypt_keyid()" function in
appl/telnet/libtelnet/encrypt.c of the telnet daemon and client could
cause a buffer overflow.
Impact
======
An unauthenticated remote attacker may be able to execute arbitrary
code with the privileges of the user running the telnet daemon or
client, or cause Denial of Service.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All Heimdal users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/heimdal-1.5.1-r1"
References
==========
[ 1 ] CVE-2011-4862
https://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-4862
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/glsa-201202-05.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2012 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
https://creativecommons.org/licenses/by-sa/2.5