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.

CVSS v3.0 6.7 MEDIUM
CVSS v2.0 6.2 MEDIUM

6.7^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.2^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 1.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity HIGH

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-pos-dll-ff8j6dFv	Vendor Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:cisco:anyconnect_secure_mobility_client:*:*:*:*:*:windows:*:*

Information

Published : 2021-06-16 11:15

Updated : 2022-08-05 08:17

NVD link : CVE-2021-1567

Mitre link : CVE-2021-1567

JSON object : View

CWE

CWE-427

Uncontrolled Search Path Element

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Products Affected

cisco

anyconnect_secure_mobility_client

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