full-disclosure - [ GLSA 200603-19 ] cURL/libcurl: Buffer overflow in the handling of TFTP URLs

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Date: Tue Mar 21 20:42:17 2006
From: vorlon at gentoo.org (Matthias Geerdsen)
Subject: [ GLSA 200603-19 ] cURL/libcurl: Buffer overflow
 in the handling of TFTP URLs

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Gentoo Linux Security Advisory                           GLSA 200603-19
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                                             http://security.gentoo.org/
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   Severity: Normal
      Title: cURL/libcurl: Buffer overflow in the handling of TFTP URLs
       Date: March 21, 2006
       Bugs: #125766
         ID: 200603-19

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Synopsis
========

libcurl is affected by a buffer overflow in the handling of URLs for
the TFTP protocol, which could be exploited to compromise a user's
system.

Background
==========

cURL is a command line tool for transferring files with URL syntax,
supporting numerous protocols. libcurl is the corresponding client-side
library.

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

     -------------------------------------------------------------------
      Package        /  Vulnerable  /                        Unaffected
     -------------------------------------------------------------------
   1  net-misc/curl      < 7.15.3                         *>= 7.15.1-r1
                                                              >= 7.15.3
                                                              <= 7.14.1

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

Ulf Harnhammar reported a possible buffer overflow in the handling of
TFTP URLs in libcurl due to the lack of boundary checks.

Impact
======

An attacker could exploit this vulnerability to compromise a user's
system by enticing the user to request a malicious URL with
cURL/libcurl or to use a HTTP server redirecting to a malicious TFTP
URL.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All cURL users should upgrade to the latest version:

     # emerge --sync
     # emerge --ask --oneshot --verbose ">=net-misc/curl-7.15.1-r1"

References
==========

   [ 1 ] Project cURL Security Advisory, March 20th 2006
         http://curl.haxx.se/docs/adv_20060320.html
   [ 2 ] CVE-2006-1061
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-1061

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

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

   http://security.gentoo.org/glsa/glsa-200603-19.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@...too.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2006 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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