[ GLSA 200903-23 ] Adobe Flash Player: Multiple vulnerabilities

[Pierre-Yves Rofes <py () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200903-23
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: Adobe Flash Player: Multiple vulnerabilities
      Date: March 10, 2009
      Bugs: #239543, #251496, #260264
        ID: 200903-23

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Synopsis
========

Multiple vulnerabilities have been identified, the worst of which allow
arbitrary code execution on a user's system via a malicious Flash file.

Background
==========

The Adobe Flash Player is a renderer for the popular SWF file format,
which is commonly used to provide interactive websites, digital
experiences and mobile content.

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

    -------------------------------------------------------------------
     Package                 /   Vulnerable   /             Unaffected
    -------------------------------------------------------------------
  1  net-www/netscape-flash     < 10.0.22.87             >= 10.0.22.87

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

Multiple vulnerabilities have been discovered in Adobe Flash Player:

* The access scope of SystemsetClipboard() allows ActionScript
  programs to execute the method without user interaction
  (CVE-2008-3873).

* The access scope of FileReference.browse() and
  FileReference.download() allows ActionScript programs to execute the
  methods without user interaction (CVE-2008-4401).

* The Settings Manager controls can be disguised as normal graphical
  elements. This so-called "clickjacking" vulnerability was disclosed
  by Robert Hansen of SecTheory, Jeremiah Grossman of WhiteHat
  Security, Eduardo Vela, Matthew Mastracci of DotSpots, and Liu Die Yu
  of TopsecTianRongXin (CVE-2008-4503).

* Matthew Dempsky reported a null-pointer dereference flaw when
  loading two SWF files compiled with different Flash versions from the
  same URI (CVE-2008-4546).

* Adan Barth (UC Berkely) and Collin Jackson (Stanford University)
  discovered a flaw occurring when interpreting HTTP response headers
  (CVE-2008-4818).

* Nathan McFeters and Rob Carter of Ernst and Young's Advanced
  Security Center are credited for finding an unspecified vulnerability
  facilitating DNS rebinding attacks (CVE-2008-4819).

* When used in a Mozilla browser, Adobe Flash Player does not
  properly interpret jar: URLs, according to a report by Gregory
  Fleischer of pseudo-flaw.net (CVE-2008-4821).

* Alex "kuza55" K. reported that Adobe Flash Player does not properly
  interpret policy files (CVE-2008-4822).

* The vendor credits Stefano Di Paola of Minded Security for
  reporting that an ActionScript attribute is not interpreted properly
  (CVE-2008-4823).

* Riley Hassell and Josh Zelonis of iSEC Partners reported multiple
  input validation errors (CVE-2008-4824).

* The aforementioned researchers also reported that ActionScript 2
  does not verify a member element's size when performing several known
  and other unspecified actions, that DefineConstantPool accepts an
  untrusted input value for a "constant count" and that character
  elements are not validated when retrieved from a data structure,
  possibly resulting in a null-pointer dereference (CVE-2008-5361,
  CVE-2008-5362, CVE-2008-5363).

* The vendor reported an unspecified arbitrary code execution
  vulnerability (CVE-2008-5499).

* Liu Die Yu of TopsecTianRongXin reported an unspecified flaw in the
  Settings Manager related to "clickjacking" (CVE-2009-0114).

* The vendor credits Roee Hay from IBM Rational Application Security
  for reporting an input validation error when processing SWF files
  (CVE-2009-0519).

* Javier Vicente Vallejo reported via the iDefense VCP that Adobe
  Flash does not remove object references properly, leading to a freed
  memory dereference (CVE-2009-0520).

* Josh Bressers of Red Hat and Tavis Ormandy of the Google Security
  Team reported an untrusted search path vulnerability (CVE-2009-0521).

Impact
======

A remote attacker could entice a user to open a specially crafted SWF
file, possibly resulting in the execution of arbitrary code with the
privileges of the user or a Denial of Service (crash). Furthermore a
remote attacker could gain access to sensitive information, disclose
memory contents by enticing a user to open a specially crafted PDF file
inside a Flash application, modify the victim's clipboard or render it
temporarily unusable, persuade a user into uploading or downloading
files, bypass security restrictions with the assistance of the user to
gain access to camera and microphone, conduct Cross-Site Scripting and
HTTP Header Splitting attacks, bypass the "non-root domain policy" of
Flash, and gain escalated privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Adobe Flash Player users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-www/netscape-flash-10.0.22.87"

References
==========

  [ 1 ] CVE-2008-3873
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3873
  [ 2 ] CVE-2008-4401
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4401
  [ 3 ] CVE-2008-4503
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4503
  [ 4 ] CVE-2008-4546
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4546
  [ 5 ] CVE-2008-4818
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4818
  [ 6 ] CVE-2008-4819
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4819
  [ 7 ] CVE-2008-4821
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4821
  [ 8 ] CVE-2008-4822
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4822
  [ 9 ] CVE-2008-4823
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4823
  [ 10 ] CVE-2008-4824
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4824
  [ 11 ] CVE-2008-5361
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5361
  [ 12 ] CVE-2008-5362
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5362
  [ 13 ] CVE-2008-5363
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5363
  [ 14 ] CVE-2008-5499
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-5499
  [ 15 ] CVE-2009-0114
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0114
  [ 16 ] CVE-2009-0519
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0519
  [ 17 ] CVE-2009-0520
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0520
  [ 18 ] CVE-2009-0521
         http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0521

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

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

  http://security.gentoo.org/glsa/glsa-200903-23.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 2009 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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