[Full-disclosure] [Fwd: Re: [ GLSA 200701-18 ] xine-ui: Format string vulnerabilities]

Hi list,

I couldn't get a confirmation from the author of this post.
GLSAs are very often the best source of detailed information
on a given vulnerability imho ; at least, They provide indications
on the type of vulnerability and the afected function name.

Too bad they're inacurate :/

Regards,

endrazine-

--- Begin Message ---

Subject:	Re: [Full-disclosure] [ GLSA 200701-18 ] xine-ui: Format string vulnerabilities
Date:	Wed, 24 Jan 2007 08:08:51 +0100

Hello Raphael,

I have an issue with this Glsa (wich is a really usefull service between, thx) :

I think the affected syscall is xitk_window_dialog_error rather at line 128,231,357 in /src/xitk/errors.c
the "bad" thing is that errors_create_window exists but wasn't modified at all...

see below...

$ diff ./xine-ui-0.99.4/src/xitk/errors.c ../../xine-ui-0.99.5_pre20060716/work/xine-ui-0.99.5_pre20060716/src/xitk/errors.c
20c20
< * $Id: errors.c,v 1.32 2005/02/07 18:16:28 miguelfreitas Exp $
---
> * $Id: errors.c,v 1.34 2006/07/15 08:46:50 dgp85 Exp $
71c71
< message);
---
> "%s", message);
113c113
< if(gGui->stdctl_enable) {
---
> if(gGui->stdctl_enable || !gGui->display) {
128c128
< xw = xitk_window_dialog_error(gGui->imlib_data, buf2);
---
> xw = xitk_window_dialog_error(gGui->imlib_data, "%s", buf2);
231c231
< xw = xitk_window_dialog_info(gGui->imlib_data, buf2);
---
> xw = xitk_window_dialog_info(gGui->imlib_data, "%s", buf2);
357c357
< message);
---
> "%s", message);

Regards,

endrazine-

Raphael Marichez a écrit :

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Gentoo Linux Security Advisory                           GLSA 200701-18
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: xine-ui: Format string vulnerabilities
      Date: January 23, 2007
      Bugs: #161558
        ID: 200701-18

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Synopsis
========

xine-ui improperly handles format strings, possibly allowing for the
execution of arbitrary code.

Background
==========

xine-ui is a skin-based user interface for xine. xine is a free
multimedia player. It plays CDs, DVDs, and VCDs, and can also decode
other common multimedia formats.

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

    -------------------------------------------------------------------
     Package  /       Vulnerable       /                    Unaffected
    -------------------------------------------------------------------
  1  xine-ui     < 0.99.5_pre20060716            >= 0.99.5_pre20060716

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

Due to the improper handling and use of format strings, the
errors_create_window() function in errors.c does not safely write data
to memory.

Impact
======

An attacker could entice a user to open a specially crafted media file
with xine-ui, and possibly execute arbitrary code.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All xine-ui users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose 
">=media-video/xine-ui-0.99.5_pre20060716"

References
==========

  [ 1 ] CVE-2007-0254
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-0254

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

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

  http://security.gentoo.org/glsa/glsa-200701-18.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 2007 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
------------------------------------------------------------------------

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