Date: Sat, 22 Oct 2005 15:20:43 +0200
From: Thierry Carrez <koon@gentoo.org.>
To: gentoo-announce@lists.gentoo.org
Subject: [ GLSA 200510-19 ] cURL: NTLM username stack overflow
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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 < 7.15.0 >= 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 ">=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?id=322&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-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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