CVE-2019-6577 : Vulnerability Insights and Analysis

A security flaw has been discovered in various versions of Siemens AG's SIMATIC HMI Comfort Panels, SIMATIC HMI Comfort Outdoor Panels, SIMATIC HMI KTP Mobile Panels, SIMATIC WinCC Runtime Advanced, SIMATIC WinCC Runtime Professional, SIMATIC WinCC (TIA Portal), and SIMATIC HMI Classic Devices. The vulnerability is related to the integrated web server and could potentially lead to Cross-Site Scripting (XSS) attacks.

Understanding CVE-2019-6577

This CVE involves a security vulnerability in multiple Siemens AG products that could be exploited for XSS attacks.

What is CVE-2019-6577?

The vulnerability allows attackers to perform XSS attacks by manipulating specific parts of the device configuration through SNMP.

The Impact of CVE-2019-6577

Attackers with network access and system privileges could compromise confidentiality and integrity.
Successful exploitation requires user interaction.
No instances of public exploitation have been reported.

Technical Details of CVE-2019-6577

This section provides technical insights into the vulnerability.

Vulnerability Description

The flaw in the integrated web server could be exploited for XSS attacks.

Affected Systems and Versions

SIMATIC HMI Comfort Panels 4" - 22" (All versions < V15.1 Update 1)
SIMATIC HMI Comfort Outdoor Panels 7" & 15" (All versions < V15.1 Update 1)
SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 und KTP900F (All versions < V15.1 Update 1)
SIMATIC WinCC Runtime Advanced (All versions < V15.1 Update 1)
SIMATIC WinCC Runtime Professional (All versions < V15.1 Update 1)
SIMATIC WinCC (TIA Portal) (All versions < V15.1 Update 1)
SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel) (All versions)

Exploitation Mechanism

Attackers need network access and system privileges to exploit the vulnerability.
Modification of device configuration through SNMP is required.
Successful exploitation necessitates user interaction.

Mitigation and Prevention

Protecting systems from CVE-2019-6577 is crucial.

Immediate Steps to Take

Apply vendor-provided patches promptly.
Restrict network access to vulnerable systems.
Monitor and analyze SNMP traffic for suspicious activities.

Long-Term Security Practices

Regularly update and patch all software and firmware.
Conduct security training to educate users on potential threats.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Siemens AG has released updates to address the vulnerability.