Gentoo: FreeRADIUS Buffer overflow and SQL injection vulnerability
Posted by Benjamin D. Thomas   
Gentoo The FreeRADIUS server is vulnerable to a buffer overflow and an SQL injection attack, possibly allowing the compromise of the system.
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Gentoo Linux Security Advisory                           GLSA 200505-13
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                                            http://security.gentoo.org/
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  Severity: High
     Title: FreeRADIUS: Buffer overflow and SQL injection vulnerability
      Date: May 17, 2005
      Bugs: #91736
        ID: 200505-13

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Synopsis
========

The FreeRADIUS server is vulnerable to a buffer overflow and an SQL
injection attack, possibly allowing the compromise of the system.

Background
==========

FreeRADIUS is an open source RADIUS authentication server
implementation.

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

    -------------------------------------------------------------------
     Package                /  Vulnerable  /                Unaffected
    -------------------------------------------------------------------
  1  net-dialup/freeradius     < 1.0.2-r3                  >= 1.0.2-r3

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

Primoz Bratanic discovered that the sql_escape_func function of
FreeRADIUS may be vulnerable to a buffer overflow (BID 13541). He also
discovered that FreeRADIUS fails to sanitize user-input before using it
in a SQL query, possibly allowing SQL command injection (BID 13540).

Impact
======

By supplying carefully crafted input, a malicious user could cause a
buffer overflow or an SQL injection, possibly leading to the execution
of arbitrary code or disclosure and the modification of sensitive data.

Workaround
==========

There are no known workarounds at this time.

Resolution
==========

All FreeRADIUS users should upgrade to the latest available version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dialup/freeradius-1.0.2-r3"

References
==========

  [ 1 ] BugTraq ID 13540
        http://www.securityfocus.com/bid/13540/
  [ 2 ] BugTraq ID 13541
        http://www.securityfocus.com/bid/13541/

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

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

  http://security.gentoo.org/glsa/glsa-200505-13.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@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 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/2.0