Faiblesses connexes
CWE-ID |
Nom de la faiblesse |
Source |
CWE-119 |
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
|
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 : 37845
Date de publication : 2015-08-18 22h00 +00:00
Auteur : bilou
EDB Vérifié : Yes
Source: https://code.google.com/p/google-security-research/issues/detail?id=316&can=1&q=label%3AProduct-Flash%20modified-after%3A2015%2F8%2F17&sort=id
[Tracking for: https://code.google.com/p/chromium/issues/detail?id=472201]
Credit is to bilou, working with the Chromium Vulnerability Rewards Program.
---
VULNERABILITY DETAILS
Loading a weird MPD file can corrupt flash player's memory.
VERSION
Chrome version 41.0.2272.101, Flash 17.0.0.134
Operating System: Win 7 x64 SP1
REPRODUCTION CASE
I'm ripping most of this from scarybeasts' sources. I'm sure he's ok with that =D.
"To reproduce, host the attached SWF and other files on a web server (e.g. localhost) and load it like this:"
"http://localhost/PlayManifest.swf?file=gen.mpd
"To compile the .as file, I had to use special flags to flex:"
"mxmlc -target-player 14.0 -swf-version 25 -static-link-runtime-shared-libraries ./PlayManifest.as"
"(This also requires that you have v14.0 of playerglobals.swc installed. Any newer version should also be fine.)"
On Win7 x64 sp1 with Chrome 32 bit, crash like this:
6AA8B67C | 8B C3 | mov eax,ebx |
6AA8B67E | E8 A1 05 00 00 | call pepflashplayer.6AA8BC24 |
6AA8B683 | EB A8 | jmp pepflashplayer.6AA8B62D |
6AA8B685 | 89 88 D0 00 00 00 | mov dword ptr ds:[eax+D0],ecx | // crash here, eax points somewhere in pepflashplayer.dll
6AA8B68B | 8B 88 88 00 00 00 | mov ecx,dword ptr ds:[eax+88] |
6AA8B691 | 33 D2 | xor edx,edx |
6AA8B693 | 3B CA | cmp ecx,edx |
6AA8B695 | 74 07 | je pepflashplayer.6AA8B69E |
6AA8B697 | 39 11 | cmp dword ptr ds:[ecx],edx |
6AA8B699 | 0F 95 C1 | setne cl |
At first sight this looks to be an uninitialized stack variable but I might be wrong.
---
Proof of Concept:
https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/37845.zip
Products Mentioned
Configuraton 0
Adobe>>Air >> Version To (including) 17.0.0.144
Adobe>>Air_sdk >> Version To (including) 17.0.0.144
Adobe>>Air_sdk_\&_compiler >> Version To (including) 17.0.0.144
Configuraton 0
Adobe>>Flash_player >> Version To (including) 13.0.0.264
Adobe>>Flash_player >> Version 14.0.0.125
Adobe>>Flash_player >> Version 14.0.0.145
Adobe>>Flash_player >> Version 14.0.0.176
Adobe>>Flash_player >> Version 14.0.0.179
Adobe>>Flash_player >> Version 15.0.0.152
Adobe>>Flash_player >> Version 15.0.0.167
Adobe>>Flash_player >> Version 15.0.0.189
Adobe>>Flash_player >> Version 15.0.0.223
Adobe>>Flash_player >> Version 15.0.0.239
Adobe>>Flash_player >> Version 15.0.0.246
Adobe>>Flash_player >> Version 16.0.0.235
Adobe>>Flash_player >> Version 16.0.0.257
Adobe>>Flash_player >> Version 16.0.0.287
Adobe>>Flash_player >> Version 16.0.0.296
Adobe>>Flash_player >> Version 17.0.0.134
Adobe>>Flash_player >> Version 17.0.0.169
Apple>>Mac_os_x >> Version -
Microsoft>>Windows >> Version -
Configuraton 0
Adobe>>Flash_player >> Version To (including) 11.2.202.475
Linux>>Linux_kernel >> Version -
Références