TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control because the same key is used for different customers' installations. It used a shared AES key for all installations since at least as far back as v7.0.43148, and used it for at least OptionsPasswordAES in the current version of the product. If an attacker were to know this key, they could decrypt protect information stored in the registry or configuration files of TeamViewer. With versions before v9.x , this allowed for attackers to decrypt the Unattended Access password to the system (which allows for remote login to the system as well as headless file browsing). The latest version still uses the same key for OptionPasswordAES but appears to have changed how the Unattended Access password is stored. While in most cases an attacker requires an existing session on a system, if the registry/configuration keys were stored off of the machine (such as in a file share or online), an attacker could then decrypt the required password to login to the system.
oryginał ENCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HTeamviewer
APPTeamviewer≤ 14.7.1965
CISA KEV — szczegółyi
- Dostawcai
- TeamViewer
- Produkti
- Desktop
- Data dodania do KEVi
- 3 listopada 2021
- Termin remediation (USA)i
- 3 maja 2022(po terminie)
Zastosuj aktualizacje zgodnie z instrukcjami dostawcy.
▸ Pokaż oryginał (EN)
Apply updates per vendor instructions.
TeamViewer Desktop umożliwia obejście kontroli dostępu do logowania zdalnego, ponieważ ten sam klucz AES jest używany dla instalacji różnych klientów. Jeśli atakujący poznałby ten klucz, mógłby odszyfrować chronione informacje przechowywane w rejestrze lub plikach konfiguracyjnych lub odszyfrować hasło Unattended Access do systemu (które umożliwia zdalne logowanie do systemu).
▸ Pokaż oryginał (EN)
TeamViewer Desktop allows for bypass of remote-login access control because the same AES key is used for different customers' installations. If an attacker were to know this key, they could decrypt protected information stored in registry or configuration files or decryption of the Unattended Access password to the system (which allows for remote login to the system).
Powiązane podatności
TeamViewer 10.x through 13.x allows remote attackers to bypass the brute-force authentication protection mecha...
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TeamViewer. ...
This vulnerability allows remote attackers to execute arbitrary code on affected installations of TeamViewer 1...
TeamViewer before 14.7.48644 on Windows loads untrusted DLLs in certain situations.
TeamViewer Desktop for Windows before 15.8.3 does not properly quote its custom URI handlers. A malicious webs...