Vulnerability Monitor

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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 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.


Published

2021-06-16T18:15:08.830

Last Modified

2024-11-21T05:44:38.390

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.0 (HIGH)

CVSSv2 Vector

AV:L/AC:H/Au:N/C:C/I:C/A:C

  • Access Vector: LOCAL
  • Access Complexity: HIGH
  • Authentication: NONE
  • Confidentiality Impact: COMPLETE
  • Integrity Impact: COMPLETE
  • Availability Impact: COMPLETE
Exploitability Score

1.9

Impact Score

10.0

Weaknesses
  • Type: Secondary
    CWE-367
  • Type: Primary
    CWE-427

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application cisco anyconnect_secure_mobility_client < 4.10.01075 Yes

References