Gentoo: 201208-06 libgdata: Man-in-the-Middle attack
Posted by Benjamin D. Thomas   
Gentoo A vulnerability in libgdata could allow remote attackers to perform man-in-the-middle attacks.
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Gentoo Linux Security Advisory                           GLSA 201208-06
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                                            http://security.gentoo.org/
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 Severity: Normal
    Title: libgdata: Man-in-the-Middle attack
     Date: August 14, 2012
     Bugs: #408245
       ID: 201208-06

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Synopsis
========

A vulnerability in libgdata could allow remote attackers to perform
man-in-the-middle attacks.

Background
==========

libgdata is a GLib-based library for accessing online service APIs
using the GData protocol.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/libgdata           < 0.8.1-r2               >= 0.8.1-r2

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

An error in the "_gdata_service_build_session()" function of
gdata-service.c prevents libgdata from properly validating
certificates.

Impact
======

A remote attacker could perform man-in-the-middle attacks to spoof
arbitrary SSL servers via a crafted certificate.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libgdata users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/libgdata-0.8.1-r2"

References
==========

[ 1 ] CVE-2012-1177
      http://nvd.nist.gov/nvd.cfm?cvename=CVE-2012-1177

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

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

 http://security.gentoo.org/glsa/glsa-201208-06.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
https://bugs.gentoo.org.

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