CVE-2020-3556 Explained : Impact and Mitigation
Learn about CVE-2020-3556, a high-impact vulnerability in Cisco AnyConnect Secure Mobility Client allowing local attackers to execute malicious scripts. Find out the affected systems, exploitation details, and mitigation steps.
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client Software could allow an authenticated, local attacker to execute a malicious script.
Understanding CVE-2020-3556
This CVE involves a security flaw in Cisco AnyConnect Secure Mobility Client that could be exploited by a local attacker to run malicious scripts on a targeted user's system.
What is CVE-2020-3556?
The vulnerability in Cisco AnyConnect Secure Mobility Client allows an authenticated local attacker to execute a malicious script by exploiting the lack of authentication to the IPC listener.
The Impact of CVE-2020-3556
The vulnerability has a high impact, with a CVSS base score of 7.3. It requires low privileges and user interaction but can result in high confidentiality, integrity, and availability impacts.
Technical Details of CVE-2020-3556
This section provides more technical insights into the vulnerability.
Vulnerability Description
The vulnerability arises from a lack of authentication to the IPC listener in Cisco AnyConnect Secure Mobility Client, enabling attackers to send crafted IPC messages to execute malicious scripts.
Affected Systems and Versions
- Product: Cisco AnyConnect Secure Mobility Client
- Vendor: Cisco
- Affected Version: n/a
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Local
- Privileges Required: Low
- User Interaction: Required
- Scope: Unchanged
- Exploitation requires ongoing AnyConnect session and valid user credentials on the system.
Mitigation and Prevention
Protecting systems from this vulnerability requires immediate actions and long-term security practices.
Immediate Steps to Take
- Monitor for Cisco's software updates addressing this vulnerability.
- Ensure no unauthorized access to AnyConnect sessions.
Long-Term Security Practices
- Implement strong authentication mechanisms for local access.
- Regularly review and update security policies and procedures.
Patching and Updates
Cisco has not released software updates to address this vulnerability yet.