March 2005

ID: 00259
Ref: 238/05
Date: 31 March 2005:15:50:23
Version: 1

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Title: Gentoo - Two Security Advisories: 1. Smarty: Template vulnerability [GLSA 200503-35] - 2. netkit-telnetd: Buffer overflow [GLSA 200503-36]
Abstract:
Vendors affected: Gentoo
Operating systems affected: Gentoo
Applications affected: Gentoo

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Title
=====

Gentoo - Two Security Advisories:
1. Smarty: Template vulnerability [GLSA 200503-35]
2. netkit-telnetd: Buffer overflow [GLSA 200503-36]


Detail
======

Security Advisory summaries:

1. Smarty's "Template security" feature can be bypassed, potentially
allowing a remote attacker to execute arbitrary PHP code.

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

Security Advisory content follows:


1.


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Gentoo Linux Security Advisory GLSA 200503-35
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http://security.gentoo.org/
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Severity: High
Title: Smarty: Template vulnerability
Date: March 30, 2005
Bugs: #86488
ID: 200503-35

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Synopsis
========

Smarty's "Template security" feature can be bypassed, potentially
allowing a remote attacker to execute arbitrary PHP code.

Background
==========

Smarty is a template engine for PHP. The "template security" feature of
Smarty is designed to help reduce the risk of a system compromise when
you have untrusted parties editing templates.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-php/smarty < 2.6.8 >= 2.6.8

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

A vulnerability has been discovered within the regex_replace modifier
of the Smarty templates when allowing access to untrusted users.

Impact
======

This issue may allow a remote attacker to bypass the "template
security" feature of Smarty, and execute arbitrary PHP code.

Workaround
==========

Do not grant template access to untrusted users.

Resolution
==========

All Smarty users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-php/smarty-2.6.8"

References
==========

[ 1 ] Smarty ChangeLog
http://smarty.php.net/misc/NEWS

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

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

http://security.gentoo.org/glsa/glsa-200503-35.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



2.



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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