CVE-2021-23845 B426 Web Configuration Authentication Bypass
An attacker can hijack sessions on the B426 web configuration page, allowing unauthorized access to the device settings.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-23845?
CVE-2021-23845 is a high-severity authentication bypass vulnerability in Bosch B426 Firmware, published on 18 Jun 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
This vulnerability could allow an attacker to hijack a session while a user is logged in the configuration web page. This vulnerability was discovered by a security researcher in B426 and found during internal product tests in B426-CN/B429-CN, and B426-M and has been fixed already starting from version 3.08 on, which was released on June 2019.
Weakness: CWE-284
Which versions are affected by CVE-2021-23845?
It affects 4 products.
Products include Bosch B426-Cn Firmware, Bosch B426-M Firmware, Bosch B426 Firmware, Bosch B429-Cn Firmware.
How do I fix CVE-2021-23845?
No fix has been published for CVE-2021-23845 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-2021-23845 being exploited?
There is no known exploitation of CVE-2021-23845 in the wild and no public exploit code.
Sources
Also known as GHSA-4fvc-h857-qw9g.