CVE-2016-8562 Siemens SIMATIC CP 1543-1 Improper Privilege Management
Attackers can write to read-only SNMP variables on Siemens SIMATIC CP devices, potentially causing denial of service.
- Exploited in the wild
- Since 3 Mar 2022
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-8562?
CVE-2016-8562 is a high-severity missing authorization vulnerability in n/a, published on 18 Nov 2016. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been identified in SIMATIC CP 1543-1 (All versions < V2.0.28), SIPLUS NET CP 1543-1 (All versions < V2.0.28). Under special conditions it was possible to write SNMP variables on port 161/udp which should be read-only and should only be configured with TIA-Portal. A write to these variables could reduce the availability or cause a denial-of-service.
Which versions are affected by CVE-2016-8562?
It affects 2 products.
Products include Siemens Simatic Cp 1543-1 Firmware, Siemens Siplus Net Cp 1543-1 Firmware.
How do I fix CVE-2016-8562?
No fix has been published for CVE-2016-8562 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 24 Mar 2022.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2016-8562 being exploited?
Yes. Attackers have exploited CVE-2016-8562 in the wild since at least 3 Mar 2022.
Other vulnerabilities in n/a
Sources
Also known as GHSA-f87x-hp4c-9cvw.