CVE-2020-15791 Information disclosure in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
An attacker can intercept network traffic to obtain valid PLC credentials due to insufficient protection in the authentication protocol.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-15791?
CVE-2020-15791 is a medium-severity vulnerability in Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants), published on 9 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions), SIMATIC S7-400 CPU family (incl. SIPLUS variants) (All versions), SIMATIC WinAC RTX (F) 2010 (All versions), SINUMERIK 840D sl (All versions). The authentication protocol between a client and a PLC via port 102/tcp (ISO-TSAP) insufficiently protects the transmitted password. This could allow an attacker that is able to intercept the network traffic to obtain valid PLC credentials.
Weakness: CWE-522
Which versions are affected by CVE-2020-15791?
It affects 14 products.
Products include Siemens Simatic S7-300 Cpu 312 Firmware, Siemens Simatic S7-300 Cpu 314 Firmware, Siemens Simatic S7-300 Cpu 315-2 Dp Firmware, Siemens Simatic S7-300 Cpu 315-2 Pn Firmware, Siemens Simatic S7-300 Cpu 315f-2 Dp Firmware, Siemens Simatic S7-300 Cpu 315f-2 Pn Firmware and 8 more.
How do I fix CVE-2020-15791?
No fix has been published for CVE-2020-15791 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-15791 being exploited?
There is no known exploitation of CVE-2020-15791 in the wild and no public exploit code.
Other vulnerabilities in Siemens SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants)
Sources
Also known as GHSA-8qxp-fp5j-5wxj.