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| Subject: | Re: [Full-disclosure] Backdooring PDF Files |
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| Date: | Sun, 17 Sep 2006 05:07:02 +0545 |
Looks to me like its a flaw in the PLUG-IN not the Acrobat Reader itself. Here plugin should be disabled for the "URI" action. Go to your folder .....ProgramFileDir\Adobe\Acrobat ver\Reader\plug_ins\ & only leave the PLUGINS that are ONLY FREQUENTLY USED BY U (or requests a program action withing the program) Which in my case, i only have the plugins, EWH32.api Search*.api rest....plugins move them to another folder (say: ProgramFileDir\Adobe\Acrobat ver\plug_ins_disabled\ ) acrobat has grown something BEYOND just a reader into something BIG with lots of attack vectors since ages. best security practices ? -bipin On 9/13/06, David Kierznowski <david.kierznowski@gmail.com> wrote:
Recently, there has been alot of hype involving backdooring various web technologies. pdp (arcitect) has done alot of work centered around this area. I saw Jeremiah Grossman mention PDF's being "BAD", however, I was unable to easily locate any practical reasons as to why. I decided to investigate this a little further. This article discusses two possible backdoor techniques for Adobe Acrabat Reader and Professional. It includes proof of concept code and backdoored PDF documents. The article can be found here: http://michaeldaw.org/ _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
-- Bipin Gautam http://bipin.tk Zeroth law of security: The possibility of poking a system from lower privilege is zero unless & until there is possibility of direct, indirect or consequential communication between the two... _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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