Podatność CVE-2021-1567


Publikacja: 2021-06-16

Opis:
A vulnerability in the DLL loading mechanism of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack on an affected device if the VPN Posture (HostScan) Module is installed on the AnyConnect client. This vulnerability is due to a race condition in the signature verification process for DLL files that are loaded on an affected device. An attacker could exploit this vulnerability by sending a series of crafted interprocess communication (IPC) messages to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected device with SYSTEM privileges. To exploit this vulnerability, the attacker must have valid credentials on the Windows system.

Typ:

CWE-367

(Time-of-check Time-of-use (TOCTOU) Race Condition)

CVSS2 => (AV:L/AC:H/Au:N/C:C/I:C/A:C)

Ogólna skala CVSS
Znaczenie
Łatwość wykorzystania
6.2/10
10/10
1.9/10
Wymagany dostęp
Złożoność ataku
Autoryzacja
Lokalny
Wysoka
Nie wymagana
Wpływ na poufność
Wpływ na integralność
Wpływ na dostępność
Pełny
Pełny
Pełny
Affected software
Cisco -> Anyconnect secure mobility client 

 Referencje:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-pos-dll-ff8j6dFv

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