U programskom paketu cURL otkriveni su sigurnosni propusti koje udaljeni napadač može iskoristiti za proizvoljno izvršavanje programskog koda, DoS napad i otkrivanje osjetljivih informacija. Udaljeni poslužitelji mogu iskoristiti propuste za oponašanje korisnika putem GSSAPI zahtjeva.

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Gentoo Linux Security Advisory                           GLSA 201203-02
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: cURL: Multiple vulnerabilities
     Date: March 06, 2012
     Bugs: #308645, #373235, #400799
       ID: 201203-02

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Synopsis
========

Multiple vulnerabilities have been found in cURL, the worst of which
might allow remote execution of arbitrary code.

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                < 7.24.0                  >= 7.24.0

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

Multiple vulnerabilities have been found in cURL:

* When zlib is enabled, the amount of data sent to an application for
  automatic decompression is not restricted (CVE-2010-0734).
* When performing GSSAPI authentication, credential delegation is
  always used (CVE-2011-2192).
* When SSL is enabled, cURL improperly disables the OpenSSL workaround
  to mitigate an information disclosure vulnerability in the SSL and
  TLS protocols (CVE-2011-3389).
* libcurl does not properly verify file paths for escape control
  characters in IMAP, POP3 or SMTP URLs (CVE-2012-0036).

Impact
======

A remote attacker could entice a user or automated process to open a
specially crafted file or URL using cURL, possibly resulting in the
remote execution of arbitrary code, a Denial of Service condition,
disclosure of sensitive information, or unwanted actions performed via
the IMAP, POP3 or SMTP protocols. Furthermore, remote servers may be
able to impersonate clients via GSSAPI requests.

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-7.24.0"

References
==========

[ 1 ] CVE-2010-0734
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2010-0734
[ 2 ] CVE-2011-2192
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2192
[ 3 ] CVE-2011-3389
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-3389
[ 4 ] CVE-2012-0036
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-0036

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

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

 http://security.gentoo.org/glsa/glsa-201203-02.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
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License
=======

Copyright 2012 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