[Full-disclosure] [ GLSA 200903-13 ] MPFR: Denial of Service

[Robert Buchholz]

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Gentoo Linux Security Advisory                           GLSA 200903-13
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: MPFR: Denial of Service
      Date: March 09, 2009
      Bugs: #260968
        ID: 200903-13

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Synopsis
========

Multiple buffer overflows in MPFR might lead to a Denial of Service.

Background
==========

MPFR is a library for multiple-precision floating-point computations
with exact rounding.

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

    -------------------------------------------------------------------
     Package        /  Vulnerable  /                        Unaffected
    -------------------------------------------------------------------
  1  dev-libs/mpfr       < 2.4.1                              >= 2.4.1

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

Multiple buffer overflows have been reported in the mpfr_snprintf() and
mpfr_vsnprintf() functions.

Impact
======

A remote user could exploit the vulnerability to cause a Denial of
Service in an application using MPFR via unknown vectors.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All MPRF users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-libs/mpfr-2.4.1"

References
==========

  [ 1 ] CVE-2009-0757
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0757

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

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

  http://security.gentoo.org/glsa/glsa-200903-13.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 at 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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