CVE-2021-1567

published 2021-06-16

CVE-2021-1567: A vulnerability in the DLL loading mechanism of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a…

Priority P4 33 medium 6.7 CVSS 3.1

AV L AC H PR L UI R S U C H I H A H

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
cisco	anyconnect_secure_mobility	—	—
cisco	anyconnect_secure_mobility_client	< 4.10.01075	4.10.01075
cisco	cisco_anyconnect_secure_mobility_client	—	—

CVSS provenance

nvd v3.1 6.7 MEDIUM CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

nvd v2.0 6.2 MEDIUM AV:L/AC:H/Au:N/C:C/I:C/A:C

vendor_cisco 7.0 HIGH

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