CVE-2023-33920 Hardcoded credentials in CP-8031 MASTER MODULE
Hardcoded root password hash allows attackers with physical access to gain root privileges via UART console on Siemens master modules.
- 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-2023-33920?
CVE-2023-33920 is a medium-severity vulnerability in Siemens CP-8031 MASTER MODULE, published on 13 Jun 2023. 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 CP-8031 MASTER MODULE (All versions < CPCI85 V05), CP-8050 MASTER MODULE (All versions < CPCI85 V05). The affected devices contain the hash of the root password in a hard-coded form, which could be exploited for UART console login to the device. An attacker with direct physical access could exploit this vulnerability.
Weakness: CWE-798
Which versions are affected by CVE-2023-33920?
It affects 1 product.
Products include Siemens Cpci85 Firmware.
How do I fix CVE-2023-33920?
No fix has been published for CVE-2023-33920 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-33920 being exploited?
There is no known exploitation of CVE-2023-33920 in the wild and no public exploit code.
Other vulnerabilities in Siemens CP-8031 MASTER MODULE
Sources
Also known as GHSA-mqj9-w9ch-6xmr.