A new security update has been released for Gentoo Linux - Adobe Flash Player: Multiple vulnerabilities. Here the announcement:

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

Background
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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
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Package / Vulnerable / Unaffected
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1 net-www/netscape-flash < 10.0.22.87 >=3D 10.0.22.87

Description
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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
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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
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There is no known workaround at this time.

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

# emerge --sync
# emerge --ask --oneshot --verbose ">=3Dnet-www/netscape-flash-10.0.2=
2.87"

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

Availability
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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?
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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
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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