CVE-2021-23843 Lack of authentication mechanisms on the device
Attackers on the local network can bypass password protection to modify configuration or cause denial of service on Bosch AMC2 devices.
- 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-2021-23843?
CVE-2021-23843 is a high-severity authentication bypass vulnerability in Bosch AMC2, published on 19 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The Bosch software tools AccessIPConfig.exe and AmcIpConfig.exe are used to configure certains settings in AMC2 devices. The tool allows putting a password protection on configured devices to restrict access to the configuration of an AMC2. An attacker can circumvent this protection and make unauthorized changes to configuration data on the device. An attacker can exploit this vulnerability to manipulate the device\'s configuration or make it unresponsive in the local network. The attacker needs to have access to the local network, typically even the same subnet.
Weakness: CWE-306
Which versions are affected by CVE-2021-23843?
It affects 4 products.
Products include Bosch Access Management System, Bosch Access Professional Edition, Bosch Amc2 Firmware, Bosch Building Integration System.
How do I fix CVE-2021-23843?
No fix has been published for CVE-2021-23843 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-2021-23843 being exploited?
There is no known exploitation of CVE-2021-23843 in the wild and no public exploit code.
Other vulnerabilities in Bosch AMC2
Sources
Also known as GHSA-mw72-7m3m-vvm2.