CVE-2021-31891 Command injection in Desigo CC
Unauthenticated remote attackers can execute arbitrary code with root privileges via command injection in Siemens building automation systems using the OIS extension.
- 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-2021-31891?
CVE-2021-31891 is a critical command injection vulnerability in Siemens Desigo CC, published on 14 Sep 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 Desigo CC (All versions with OIS Extension Module), GMA-Manager (All versions with OIS running on Debian 9 or earlier), Operation Scheduler (All versions with OIS running on Debian 9 or earlier), Siveillance Control (All versions with OIS running on Debian 9 or earlier), Siveillance Control Pro (All versions). The affected application incorrectly neutralizes special elements in a specific HTTP GET request which could lead to command injection. An unauthenticated remote attacker could exploit this vulnerability to execute arbitrary code on the system with root privileges.
Weakness: CWE-78
Which versions are affected by CVE-2021-31891?
It affects 5 products.
Products include Siemens Desigo Cc, Siemens Gma-Manager, Siemens Operation Scheduler, Siemens Siveillance Control, Siemens Siveillance Control Pro.
How do I fix CVE-2021-31891?
No fix has been published for CVE-2021-31891 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2021-31891 being exploited?
There is no known exploitation of CVE-2021-31891 in the wild and no public exploit code.
Sources
Also known as GHSA-ch26-285q-m7w2.