Adobe Flash Player: Multiple vulnerabilities
Gentoo Linux Security Advisory
||GLSA 200903-23 / adobe-flash
||March 10, 2009
||May 28, 2009: 04
All supported architectures
#239543, #251496, #260264
Multiple vulnerabilities have been identified, the worst of which allow
arbitrary code execution on a user's system via a malicious Flash file.
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.
Multiple vulnerabilities have been discovered in Adobe Flash Player:
- The access scope of SystemsetClipboard() allows ActionScript
programs to execute the method without user interaction
- 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
- Adan Barth (UC Berkely) and Collin Jackson (Stanford University)
discovered a flaw occurring when interpreting HTTP response headers
- 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
- 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,
- The vendor reported an unspecified arbitrary code execution
- 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
- 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
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.
There is no known workaround at this time.
All Adobe Flash Player users should upgrade to the latest version:
Code Listing 3.1: Resolution
# emerge --sync
# emerge --ask --oneshot --verbose ">=www-plugins/adobe-flash-10.0.22.87"