CVE-2020-15798 Auth bypass in SIMATIC HMI Comfort Panels (incl. SIPLUS variants)
Remote attackers can gain full device access via unauthenticated Telnet service on affected Siemens HMI panels and SINAMICS drives.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-15798?
CVE-2020-15798 is a critical authentication bypass vulnerability in Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants), published on 9 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability has been identified in SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions < V16 Update 3a), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 3a), SINAMICS GH150 (All versions), SINAMICS GL150 (with option X30) (All versions), SINAMICS GM150 (with option X30) (All versions), SINAMICS SH150 (All versions), SINAMICS SL150 (All versions), SINAMICS SM120 (All versions), SINAMICS SM150 (All versions), SINAMICS SM150i (All versions). Affected devices with enabled telnet service do not require authentication for this service. This could allow a remote attacker to gain full access to the device. (ZDI-CAN-12046)
Weakness: CWE-306
Which versions are affected by CVE-2020-15798?
It affects 10 products.
Products include Siemens Simatic Hmi Comfort Panels Firmware, Siemens Simatic Hmi Ktp Mobile Panels Firmware, Siemens Sinamics Gh150 Firmware, Siemens Sinamics Gl150 Firmware, Siemens Sinamics Gm150 Firmware, Siemens Sinamics Sh150 Firmware and 4 more.
How do I fix CVE-2020-15798?
No fix has been published for CVE-2020-15798 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2020-15798 being exploited?
There is no known exploitation of CVE-2020-15798 in the wild and no public exploit code.
Other vulnerabilities in Siemens SIMATIC HMI Comfort Panels (incl. SIPLUS variants)
Sources
Also known as GHSA-p3v5-8v5r-qgp2.