GLSA 200510-19 cURL: NTLM username stack overflow
Posted on: 10/22/2005 02:42 PM

A new security update has been released for Gentoo Linux - cURL: NTLM username stack overflow. Here the announcement:

Gentoo Linux Security Advisory GLSA 200510-19
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http://security.gentoo.org/
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Severity: Normal
Title: cURL: NTLM username stack overflow
Date: October 22, 2005
Bugs: #109097
ID: 200510-19

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Synopsis
========

cURL is vulnerable to a buffer overflow which could lead to the
execution of arbitrary code.

Background
==========

cURL is a command line tool and library for transferring files via many
different protocols. It supports NTLM authentication to retrieve files
from Windows-based systems.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/curl lt; 7.15.0 gt;= 7.15.0

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

iDEFENSE reported that insufficient bounds checking on a memcpy() of
the supplied NTLM username can result in a stack overflow.

Impact
======

A remote attacker could setup a malicious server and entice an user to
connect to it using a cURL client, potentially leading to the execution
of arbitrary code with the permissions of the user running cURL.

Workaround
==========

Disable NTLM authentication by not using the --anyauth or --ntlm
options when using cURL (the command line version). Workarounds for
programs that use the cURL library depend on the configuration options
presented by those programs.

Resolution
==========

All cURL users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose "gt;=net-misc/curl-7.15.0"

References
==========

[ 1 ] CVE-2005-3185
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3185
[ 2 ] iDefense Security Advisory 10.13.05

http://www.idefense.com/application/poi/display?id22type=vulnerabilities

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

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

http://security.gentoo.org/glsa/glsa-200510-19.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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