CVE-2020-3433: Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability

1. In CISA KEVCISA KEV catalogue24 Oct 2022
2. Exploited (reported): not seen
3. Scanning observed: not seen
4. Proof of concept public: not seen
5. Not established: not seen

DescriptionCVE.org

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.

• Cisco · Cisco AnyConnect Secure Mobility ClientVersions not stated

Exploitation

Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalogue.

CISA KEV

Listed since 24 Oct 2022 · known ransomware use · catalogue entry

Public check

No public nuclei template

Weakness

Uncontrolled Search Path · File and Path Handling

Vendor

Cisco

Published

August 2020

Band

Exploited in the wild, August 2020

1. 5 Nov
   CISA’s KEV entry now notes known ransomware use CISA
2. 24 Oct 2022
   CISA added it to the KEV catalogue CISA

• NVD entrynvd.nist.gov
• CISA KEV cataloguecisa.gov
• CVE recordcve.org
• Weakness CWE-427cwe.mitre.org
• Vendor advisorytools.cisco.com
• packetstormsecurity.com/files/159420/Cisco-AnyConnect-Privilege-packetstormsecurity.com