CVE-2020-27123 : Security Advisory and Response
Learn about CVE-2020-27123, a vulnerability in Cisco AnyConnect Secure Mobility Client for Windows allowing local attackers to read arbitrary files. Find mitigation steps and impact details.
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to read arbitrary files on the underlying operating system of an affected device.
Understanding CVE-2020-27123
This CVE involves a security flaw in Cisco AnyConnect Secure Mobility Client for Windows that could be exploited by a local attacker to access sensitive files on the affected device.
What is CVE-2020-27123?
The vulnerability arises from an exposed IPC function within the AnyConnect process, enabling a crafted IPC message to be sent by an attacker to read arbitrary files on the device's operating system.
The Impact of CVE-2020-27123
- CVSS Base Score: 5.5 (Medium Severity)
- Confidentiality Impact: High
- Attack Vector: Local
- Privileges Required: Low
- User Interaction: None
- No known public exploits or malicious activities related to this vulnerability.
Technical Details of CVE-2020-27123
This section delves into the specifics of the vulnerability.
Vulnerability Description
The flaw allows an authenticated local attacker to read arbitrary files on the underlying OS by exploiting the exposed IPC function in the AnyConnect process.
Affected Systems and Versions
- Affected Product: Cisco AnyConnect Secure Mobility Client
- Vendor: Cisco
- Affected Version: Not applicable
Exploitation Mechanism
An attacker can exploit this vulnerability by sending a carefully crafted IPC message to the AnyConnect process on the affected device.
Mitigation and Prevention
Steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor Cisco's security advisories for any relevant information.
Long-Term Security Practices
- Regularly update and patch software to mitigate potential vulnerabilities.
- Implement the principle of least privilege to restrict access.
Patching and Updates
- Ensure the AnyConnect Secure Mobility Client is updated to the latest version.
- Follow Cisco's recommendations for securing the AnyConnect client.