CVE-2022-31808 : Security Advisory and Response

A vulnerability has been identified in SiPass integrated AC5102 (ACC-G2) and SiPass integrated ACC-AP by Siemens, allowing authenticated users to escalate privileges by injecting arbitrary commands with root privileges.

Understanding CVE-2022-31808

This CVE identifies a vulnerability in Siemens' SiPass integrated AC5102 (ACC-G2) and SiPass integrated ACC-AP versions below V2.85.44 and V2.85.43, respectively.

What is CVE-2022-31808?

The vulnerability arises from improper input validation that allows authenticated users to inject arbitrary commands through the telnet command line interface, leading to privilege escalation with root access.

The Impact of CVE-2022-31808

With a CVSSv3.1 base score of 7.8 (High), this vulnerability can be exploited by authenticated users to execute unauthorized commands with elevated privileges, potentially compromising the system's security and integrity.

Technical Details of CVE-2022-31808

This section delves into the specifics of the vulnerability affecting Siemens' SiPass integrated systems.

Vulnerability Description

The flaw lies in the inadequate sanitization of user input on the telnet command line interface, enabling authenticated users to insert and execute arbitrary commands as root, leading to privilege escalation.

Affected Systems and Versions

Siemens' SiPass integrated AC5102 (ACC-G2) versions below V2.85.44 and SiPass integrated ACC-AP versions below V2.85.43 are impacted by this vulnerability.

Exploitation Mechanism

An authenticated user can leverage the vulnerability by injecting specific commands through the telnet interface, manipulating the system to execute unauthorized actions with root privileges.

Mitigation and Prevention

To protect systems from CVE-2022-31808, immediate actions and long-term security measures should be implemented.

Immediate Steps to Take

Upgrade affected SiPass integrated systems to versions V2.85.44 (AC5102) and V2.85.43 (ACC-AP) or above to mitigate the vulnerability.
Restrict access to the telnet command line interface to authorized personnel only.

Long-Term Security Practices

Regularly update and patch SiPass integrated systems to ensure the latest security enhancements are in place.
Implement robust input validation mechanisms to prevent injection attacks and privilege escalation exploits.

Patching and Updates

Siemens may release security patches or updates to address CVE-2022-31808. Stay informed about these releases and apply them promptly to safeguard your systems.