CVE-2019-19276 Denial of service in SIMATIC HMI Comfort Panels 1st Generation (incl. SIPLUS variants)
Crafted UDP packets crash the SNMP service on Siemens HMI panels, requiring a manual restart to restore operation.
- 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-2019-19276?
CVE-2019-19276 is a medium-severity denial of service vulnerability in Siemens SIMATIC HMI Comfort Panels 1st Generation (incl. SIPLUS variants), published on 12 May 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 1st Generation (incl. SIPLUS variants) (All versions < V16 Update 4), SIMATIC HMI KTP Mobile Panels (All versions < V16 Update 4). Specially crafted packets sent to port 161/udp can cause the SNMP service of affected devices to crash. A manual restart of the device is required to resume operation of the service.
Weakness: CWE-787
Which versions are affected by CVE-2019-19276?
It affects 2 products.
Products include Siemens Simatic Hmi Comfort Panels Firmware, Siemens Simatic Hmi Ktp Mobile Panels Firmware.
How do I fix CVE-2019-19276?
No fix has been published for CVE-2019-19276 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-19276 being exploited?
There is no known exploitation of CVE-2019-19276 in the wild and no public exploit code.
Other vulnerabilities in Siemens SIMATIC HMI Comfort Panels 1st Generation (incl. SIPLUS variants)
Sources
Also known as GHSA-v5g4-whqh-4265.