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Gentoo Linux Security Advisory                           GLSA 201710-11
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: GNU Libtasn1: Multiple vulnerabilities
     Date: October 13, 2017
     Bugs: #619686, #627014
       ID: 201710-11

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Synopsis
========

Multiple vulnerabilities have been found in GNU Libtasn1, the worst of
which may allow remote attackers to execute arbitrary code.

Background
==========

A library that provides Abstract Syntax Notation One (ASN.1, as
specified by the X.680 ITU-T recommendation) parsing and structures
management, and Distinguished Encoding Rules (DER, as per X.690)
encoding and decoding functions.

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/libtasn1           < 4.12-r1                 >= 4.12-r1 

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

Multiple vulnerabilities have been discovered in GNU Libtasn1. Please
review the referenced CVE identifiers for details.

Impact
======

A remote attacker could possibly execute arbitrary code with the
privileges of the process, cause a Denial of Service condition, or have
other unspecified impacts.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GNU Libtasn1 users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/libtasn1-4.12-r1"

Packages which depend on this library may need to be recompiled. Tools
such as revdep-rebuild may assist in identifying some of these
packages.

References
==========

[ 1 ] CVE-2017-10790
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-10790
[ 2 ] CVE-2017-6891
      https://nvd.nist.gov/nvd.cfm?cvename=CVE-2017-6891

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

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

 https://security.gentoo.org/glsa/201710-11

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 2017 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