CVE-2022-24042 Auth bypass in Desigo DXR2
Attackers can reuse expired session tokens to bypass authentication and gain unauthorized access to Siemens Desigo building automation controllers.
- 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-2022-24042?
CVE-2022-24042 is a critical authentication bypass vulnerability in Siemens Desigo DXR2, published on 10 May 2022. 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 DXR2 (All versions < V01.21.142.5-22), Desigo PXC3 (All versions < V01.21.142.4-18), Desigo PXC4 (All versions < V02.20.142.10-10884), Desigo PXC5 (All versions < V02.20.142.10-10884). The web application returns an AuthToken that does not expire at the defined auto logoff delay timeout. An attacker could be able to capture this token and re-use old session credentials or session IDs for authorization.
Weakness: CWE-613
Which versions are affected by CVE-2022-24042?
It affects 4 products.
Products include Siemens Desigo Dxr2 Firmware, Siemens Desigo Pxc3 Firmware, Siemens Desigo Pxc4 Firmware, Siemens Desigo Pxc5 Firmware.
How do I fix CVE-2022-24042?
No fix has been published for CVE-2022-24042 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-2022-24042 being exploited?
There is no known exploitation of CVE-2022-24042 in the wild and no public exploit code.
Other vulnerabilities in Siemens Desigo DXR2
Sources
Also known as GHSA-7rrh-86wh-4q5p.