CVE-2019-10935 File upload in SIMATIC PCS 7 V8.0 and earlier

Q: Is CVE-2019-10935 being exploited?

There is no known exploitation of CVE-2019-10935 in the wild and no public exploit code.

Q: How do I fix CVE-2019-10935?

No fix has been published for CVE-2019-10935 yet. Limit exposure of the affected software until one is available.

High 7.2 Published 11 Jul 2019 Updated 4 Aug 2024

An authenticated attacker can upload arbitrary ASPX code to the WinCC DataMonitor web application, leading to remote code execution and full system compromise.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-10935?

CVE-2019-10935 is a high-severity vulnerability in Siemens AG SIMATIC PCS 7 V8.0 and earlier, published on 11 Jul 2019. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A vulnerability has been identified in SIMATIC PCS 7 V8.0 and earlier (All versions), SIMATIC PCS 7 V8.1 (All versions < V8.1 with WinCC V7.3 Upd 19), SIMATIC PCS 7 V8.2 (All versions < V8.2 SP1 with WinCC V7.4 SP1 Upd 11), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP2 with WinCC V7.4 SP1 Upd11), SIMATIC WinCC Professional (TIA Portal V13) (All versions), SIMATIC WinCC Professional (TIA Portal V14) (All versions < V14 SP1 Upd 9), SIMATIC WinCC Professional (TIA Portal V15) (All versions < V15.1 Upd 3), SIMATIC WinCC Runtime Professional V13 (All versions), SIMATIC WinCC Runtime Professional V14 (All versions < V14.1 Upd 8), SIMATIC WinCC Runtime Professional V15 (All versions < V15.1 Upd 3), SIMATIC WinCC V7.2 and earlier (All versions), SIMATIC WinCC V7.3 (All versions < V7.3 Upd 19), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Upd 11), SIMATIC WinCC V7.5 (All versions < V7.5 Upd 3). The SIMATIC WinCC DataMonitor web application of the affected products allows to upload arbitrary ASPX code. The security vulnerability could be exploited by an authenticated attacker with network access to the WinCC DataMonitor application. No user interaction is required to exploit this vulnerability. The vulnerability impacts confidentiality, integrity, and availability of the affected device. At the stage of publishing this security advisory no public exploitation is known.

Weakness: CWE-434

Which versions are affected by CVE-2019-10935?

It affects 3 products.

Products include Siemens Simatic Pcs 7, Siemens Simatic Wincc, Siemens Simatic Wincc Runtime.

How do I fix CVE-2019-10935?

No fix has been published for CVE-2019-10935 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-10935 being exploited?

There is no known exploitation of CVE-2019-10935 in the wild and no public exploit code.

Sources

Also known as GHSA-3hg6-vvm5-64f6.