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Sicherheit: Pufferüberlauf in netkit-telnetd
Aktuelle Meldungen Distributionen
Name: Pufferüberlauf in netkit-telnetd
ID: 200503-36
Distribution: Gentoo
Plattformen: Keine Angabe
Datum: Fr, 1. April 2005, 13:00
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0469
Applikationen: NetKit

Originalnachricht

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Gentoo Linux Security Advisory GLSA 200503-36
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http://security.gentoo.org/
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Severity: Normal
Title: netkit-telnetd: Buffer overflow
Date: March 31, 2005
Bugs: #87211
ID: 200503-36

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Synopsis
========

The netkit-telnetd telnet client is vulnerable to a buffer overflow,
which could allow a malicious telnet server operator to execute
arbitrary code.

Background
==========

netkit-telnetd provides standard Linux telnet client and server.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/netkit-telnetd < 0.17-r6 >= 0.17-r6

Description
===========

A buffer overflow has been identified in the slc_add_reply() function
of netkit-telnetd client, where a large number of SLC commands can
overflow a fixed size buffer.

Impact
======

Successful explotation would require a vulnerable user to connect to an
attacker-controlled host using telnet, potentially executing arbitrary
code with the permissions of the telnet user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All netkit-telnetd users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=net-misc/netkit-telnetd-0.17-r6"

References
==========

[ 1 ] CAN-2005-0469
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0469
[ 2 ] iDEFENSE Advisory 03-28-05

http://www.idefense.com/application/poi/display?id=220&type=vulnerabilities

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200503-36.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
http://bugs.gentoo.org.

License
=======

Copyright 2005 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.

http://creativecommons.org/licenses/by-sa/2.0
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