CVE-2022-20790 : What You Need to Know

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session Management Edition (Unified CM SME) could allow an authenticated, remote attacker to read arbitrary files from the underlying operating system.

Understanding CVE-2022-20790

This CVE affects Cisco Unified Communications Manager and Cisco Unified Communications Manager Session Management Edition, potentially enabling an attacker to access sensitive files through a crafted HTTP request.

What is CVE-2022-20790?

The vulnerability arises from improper validation of user-supplied input in the web-based management interface. By exploiting this flaw, a remote attacker could access critical files on the system.

The Impact of CVE-2022-20790

If successfully exploited, an attacker could gain unauthorized access to sensitive information on the affected operating system.

Technical Details of CVE-2022-20790

The vulnerability pertains to an arbitrary file read issue in Cisco Unified Communications Manager and Session Management Edition.

Vulnerability Description

The flaw allows an authenticated, remote attacker to read arbitrary files due to improper validation of user input in the web-based management interface.

Affected Systems and Versions

The issue affects Cisco Unified Communications Manager and Cisco Unified Communications Manager Session Management Edition. Specific version information is not available.

Exploitation Mechanism

By sending a malicious HTTP request containing directory traversal characters, an attacker can exploit this vulnerability to read sensitive files on the underlying operating system.

Mitigation and Prevention

To mitigate the risks associated with CVE-2022-20790, immediate actions and long-term security practices are recommended.

Immediate Steps to Take

Cisco recommends applying the necessary security updates as soon as they are available to address this vulnerability.
Monitor for any unauthorized access or unusual activities on the affected systems.

Long-Term Security Practices

Regularly update and patch the software to prevent similar vulnerabilities from being exploited in the future.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Visit the Cisco Security Advisory for CVE-2022-20790 to access the latest patches and updates for the affected products.