CVE-2021-23857 Login with hash
Attackers can bypass authentication by logging in with a password hash instead of the plaintext password, gaining unauthorized access to the system.
- 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-2021-23857?
CVE-2021-23857 is a critical authentication bypass vulnerability in Rexroth IndraMotion MLC L20, L40, published on 4 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Login with hash: The login routine allows the client to log in to the system not by using the password, but by using the hash of the password. Combined with CVE-2021-23858, this allows an attacker to subsequently login to the system.
Which versions are affected by CVE-2021-23857?
It affects 12 products.
Products include Bosch Rexroth Indramotion Mlc L20 Firmware, Bosch Rexroth Indramotion Mlc L25 Firmware, Bosch Rexroth Indramotion Mlc L40 Firmware, Bosch Rexroth Indramotion Mlc L45 Firmware, Bosch Rexroth Indramotion Mlc L65 Firmware, Bosch Rexroth Indramotion Mlc L75 Firmware and 6 more.
How do I fix CVE-2021-23857?
No fix has been published for CVE-2021-23857 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-2021-23857 being exploited?
There is no known exploitation of CVE-2021-23857 in the wild and no public exploit code.
Other vulnerabilities in Rexroth IndraMotion MLC L20, L40
Sources
Also known as GHSA-rpjw-wq4m-v5j8.