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Gentoo Linux Security Advisory                           GLSA 200404-04
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                                             http://security.gentoo.org
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  Severity: Normal
     Title: Multiple vulnerabilities in sysstat
      Date: April 06, 2004 
      Bugs: #45159
        ID: 200404-04

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Synopsis
========

Multiple vulnerabilities in the way sysstat handles symlinks may allow
an attacker to execute arbitrary code or overwrite arbitrary files

Background
==========

sysstat is a package containing a number of performance monitoring
utilities for Linux, including sar, mpstat, iostat and sa tools

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

    -------------------------------------------------------------------
     Package            /   Vulnerable   /                  Unaffected
    -------------------------------------------------------------------
     app-admin/sysstat        < 5.0.2                         >= 5.0.2

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

There are two vulnerabilities in the way sysstat handles symlinks:

1. The isag utility, which displays sysstat data in a graphical
   format, creates a temporary file in an insecure manner.

2. Two scripts in the sysstat package, post and trigger, create
   temporary files in an insecure manner.

Impact
======

Both vulnerabilities may allow an attacker to overwrite arbitrary files
under the permissions of the user executing any of the affected 
utilities.

Workaround
==========

A workaround is not currently known for this issue. All users are
advised to upgrade to the latest version of the affected package.

Resolution
==========

Systat users should upgrade to version 4.2 or later:

    # emerge sync

    # emerge -pv ">=app-admin/sysstat-5.0.2"
    # emerge ">=app-admin/sysstat-5.0.2"

References
==========

  [ 1 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0107
  [ 2 ] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0108

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
http://bugs.gentoo.org.