CVE-2020-3433

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.

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

• 7.8CVSS 3.1, Highfrom the CNA (cisco)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What to do

• Apply updates per vendor instructions.CISA KEV required action

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Timeline

1. 17 Aug 2020 Published
2. 24 Oct 2022 CVE-2020-3433 added to CISA KEV
3. 24 Oct 2022 Added to the CISA KEV catalogue

Weakness

• CWE-427

References

• 20200805 Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerabilityvendor-advisoryx_refsource_CISCO
• packetstormsecurity.comx_refsource_MISC