Back to KEVs

CVE-2020-3433

Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

Basic Information

CVE State
PUBLISHED
Reserved Date
December 12, 2019
Published Date
August 17, 2020
Last Updated
November 08, 2024
Vendor
Cisco
Product
Cisco AnyConnect Secure Mobility Client
Description
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of resources that are loaded by the application at run time. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process. A successful exploit could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.
Tags
windows cisa malware ransomware edge metasploit_scanner

CVSS Scores

CVSS v3.1

7.8 - HIGH

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC Information

Exploitation
active
Technical Impact
total

Exploit Status

Exploited in the Wild
Yes (2022-10-24 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2020-09-25 20:53:48 UTC) Source
Used in Malware
Yes (added 2022-10-24 00:00:00 UTC) Source

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-dll-F26WwJW http://packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-Escalation.html

Known Exploited Vulnerability Information

Source Added Date
CISA 2022-10-24 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Metasploit https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/anyconnect_lpe.rb 2025-04-29 11:01:40 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

anyconnect_lpe

Type: metasploit • Created: Unknown

Metasploit module for CVE-2020-3433

goichot/CVE-2020-3433

Type: github • Created: 2020-09-25 20:53:48 UTC • Stars: 43

PoCs and technical analysis of three vulnerabilities found on Cisco AnyConnect for Windows: CVE-2020-3433, CVE-2020-3434 and CVE-2020-3435

Timeline

  • CVE ID Reserved

  • CVE Published to Public

  • Proof of Concept Exploit Available

  • Exploit Used in Malware

  • Added to KEVIntel

  • Detected by Metasploit