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

[Matthias Geerdsen <vorlon () gentoo org>]

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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 () gentoo 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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