CVE-2022-25753 : Security Advisory and Response

A buffer overflow vulnerability has been discovered in multiple Siemens SCALANCE devices. This vulnerability could be exploited by an authenticated remote attacker to execute arbitrary code on the affected devices.

Understanding CVE-2022-25753

This CVE affects a wide range of Siemens SCALANCE devices due to a buffer overflow vulnerability in handling CLI arguments related to IP addresses. The impact of this vulnerability allows a remote attacker to execute arbitrary code on the device once authenticated.

What is CVE-2022-25753?

The vulnerability lies in the way the affected Siemens SCALANCE devices process IP addresses in the CLI. Exploitation of this vulnerability could lead to a buffer overflow situation, enabling attackers to execute malicious code remotely.

The Impact of CVE-2022-25753

The buffer overflow vulnerability in the affected SCALANCE devices could result in a serious security breach. An authenticated remote attacker can leverage this flaw to run arbitrary code on the device, potentially leading to unauthorized access and control.

Technical Details of CVE-2022-25753

Here are some key technical details related to this CVE:

Vulnerability Description

A buffer overflow vulnerability exists in Siemens SCALANCE devices, allowing for unauthorized code execution.

Affected Systems and Versions

All versions prior to V4.1.4 of the following SCALANCE devices are impacted:

SCALANCE X302-7 EEC (230V)
SCALANCE X302-7 EEC (230V, coated)
SCALANCE X302-7 EEC (24V)
SCALANCE X302-7 EEC (24V, coated)
And more...

Exploitation Mechanism

The vulnerability is exploited by manipulating specific CLI arguments related to IP addresses, resulting in a buffer overflow condition that can be abused to execute arbitrary code remotely.

Mitigation and Prevention

To address CVE-2022-25753, consider implementing the following measures:

Immediate Steps to Take

Update affected SCALANCE devices to version V4.1.4 or later.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all network-connected devices.
Enforce strong authentication mechanisms and access controls.

Patching and Updates

Ensure that all Siemens SCALANCE devices are regularly patched and updated to the latest firmware version containing security fixes.