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Category:   Application (Multimedia)  >   mpg123 Vendors:   mpg123.de
(Gentoo Issues Fix) mpg123 Buffer Overflow in getauthformURL() May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1011973
SecurityTracker URL:  http://securitytracker.com/id/1011973
CVE Reference:   CVE-2004-0982   (Links to External Site)
Updated:  Nov 2 2004
Original Entry Date:  Oct 28 2004
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 0.59r, pre0.59s
Description:   A buffer overflow vulnerability was reported in mpg123 in getauthformURL(). A remote user may be able to execute arbitrary code on the target user's system.

Carlos Barros reported that getauthfromURL() contains an overflow in the processing of the 'httpauth1' variable. A remote user can create a specially crafted playlist that, when processed by the target user, may execute arbitrary code on the target user's system.

A demonstration exploit URL format is provided:

http://AAAAAAAAAAAAAA...AAAAA@www.somesite.com/somefile.xxx,

It is reported that the http_open() function also contains a buffer overflow that allows a local user to execute arbitrary code.

The vendor was notified on October 10, 2004, without response.

Impact:   A remote user may be able to execute arbitrary code on the target user's system with the privileges of the target user.
Solution:   Gentoo has released a fix and indicates that all mpg123 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=media-sound/mpg123-0.59s-r5"

Vendor URL:  www.mpg123.de/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Gentoo)

Message History:   This archive entry is a follow-up to the message listed below.
Oct 21 2004 mpg123 Buffer Overflow in getauthformURL() May Let Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [gentoo-announce] [ GLSA 200410-27 ] mpg123: Buffer overflow vulnerabilities



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Gentoo Linux Security Advisory                           GLSA 200410-27
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: mpg123: Buffer overflow vulnerabilities
      Date: October 27, 2004
      Bugs: #68343
        ID: 200410-27

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Synopsis
========

Buffer overflow vulnerabilities have been found in mpg123 which could
lead to execution of arbitrary code.

Background
==========

mpg123 is a MPEG Audio Player.

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

    -------------------------------------------------------------------
     Package             /  Vulnerable  /                   Unaffected
    -------------------------------------------------------------------
  1  media-sound/mpg123     < 0.59s-r5                     >= 0.59s-r5

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

Buffer overflow vulnerabilities in the getauthfromURL() and http_open()
functions have been reported by Carlos Barros. Additionally, the Gentoo
Linux Sound Team fixed additional boundary checks which were found to
be lacking.

Impact
======

By enticing a user to open a malicious playlist or URL or making use of
a specially-crafted symlink, an attacker could possibly execute
arbitrary code with the rights of the user running mpg123.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All mpg123 users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-sound/mpg123-0.59s-r5"

References
==========

  [ 1 ] Security Advisory by Carlos Barros
        http://www.barrossecurity.com/advisories/mpg123_getauthfromurl_bof_advisory.txt

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

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

  http://security.gentoo.org/glsa/glsa-200410-27.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 2004 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/1.0

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