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[gentoo-announce] [ GLSA 200903-21 ] cURL: Arbitrary file access

Posted on 10 March 2009
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 200903-21
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http://security.gentoo.org/
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Severity: Normal
Title: cURL: Arbitrary file access
Date: March 09, 2009
Bugs: #260361
ID: 200903-21

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Synopsis
========
A vulnerability in cURL may allow for arbitrary file access.

Background
==========
cURL is a command line tool for transferring files with URL syntax,
supporting numerous protocols.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-misc/curl < 7.19.4 >= 7.19.4

Description
===========
David Kierznowski reported that the redirect implementation accepts
arbitrary Location values when CURLOPT_FOLLOWLOCATION is enabled.

Impact
======
A remote attacker could possibly exploit this vulnerability to make
remote HTTP servers trigger arbitrary requests to intranet servers and
read or overwrite arbitrary files via a redirect to a file: URL, or, if
the libssh2 USE flag is enabled, execute arbitrary commands via a
redirect to an scp: 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-7.19.4"

References
==========
[ 1 ] CVE-2009-0037
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0037

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

http://security.gentoo.org/glsa/glsa-200903-21.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 2009 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/2.5


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