CVE-2019-6577 Cross-site scripting in SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel)

Medium 5.4 Published Updated

An attacker with system privileges can inject scripts into the web server via SNMP configuration changes, compromising confidentiality and integrity.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2019-6577?

CVE-2019-6577 is a medium-severity cross-site scripting vulnerability in Siemens AG SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel), published on 14 May 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability has been identified in 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). The integrated web server could allow Cross-Site Scripting (XSS) attacks if an attacker is able to modify particular parts of the device configuration via SNMP. The security vulnerability could be exploited by an attacker with network access to the affected system. Successful exploitation requires system privileges and user interaction. An attacker could use the vulnerability to compromise confidentiality and the integrity of the affected system. At the stage of publishing this security advisory no public exploitation is known.

Weakness: CWE-79, CWE-80

Which versions are affected by CVE-2019-6577?

It affects 12 products.

Products include Siemens Simatic Hmi Comfort Outdoor Panels Firmware, Siemens Simatic Hmi Comfort Panels Firmware, Siemens Simatic Hmi Ktp Mobile Panels Ktp400f Firmware, Siemens Simatic Hmi Ktp Mobile Panels Ktp700 Firmware, Siemens Simatic Hmi Ktp Mobile Panels Ktp700f Firmware, Siemens Simatic Hmi Ktp Mobile Panels Ktp900 Firmware and 6 more.

How do I fix CVE-2019-6577?

No fix has been published for CVE-2019-6577 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-6577 being exploited?

There is no known exploitation of CVE-2019-6577 in the wild and no public exploit code.

Sources

Also known as GHSA-cxq5-q43p-whjh.

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