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Gentoo Linux Security Advisory                           GLSA 200805-11
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                                            https://security.gentoo.org/
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  Severity: Normal
     Title: Chicken: Multiple vulnerabilities
      Date: May 12, 2008
      Bugs: #198979
        ID: 200805-11

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Synopsis
=======
Multiple vulnerabilities in Chicken could result in the execution of
arbitrary code.

Background
=========
Chicken is a Scheme interpreter and native Scheme to C compiler.

Affected packages
================
    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  dev-scheme/chicken       < 3.1.0                         >= 3.1.0

Description
==========
Chicken includes a copy of PCRE which is vulnerable to multiple buffer
overflows and memory corruption vulnerabilities (GLSA 200711-30).

Impact
=====
An attacker could entice a user to process specially crafted regular
expressions with Chicken, which could possibly lead to the execution of
arbitrary code, a Denial of Service or the disclosure of sensitive
information.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All Chicken users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=dev-scheme/chicken-3.1.0"

References
=========
  [ 1 ] GLSA 200711-30
        https://security.gentoo.org/glsa/200711-30

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

  https://security.gentoo.org/glsa/200805-11

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 2008 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.

https://creativecommons.org/licenses/by-sa/2.5/
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