CVE-2020-28214 Weak cryptography in Modicon M221 (all references, all versions)
Attackers can pre-compute password hashes using rainbow tables due to predictable salts, bypassing authentication protections in Modicon M221 devices.
- 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-2020-28214?
CVE-2020-28214 is a critical vulnerability in Modicon M221 (all references, all versions), published on 11 Dec 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A CWE-760: Use of a One-Way Hash with a Predictable Salt vulnerability exists in Modicon M221 (all references, all versions), that could allow an attacker to pre-compute the hash value using dictionary attack technique such as rainbow tables, effectively disabling the protection that an unpredictable salt would provide.
Weakness: CWE-760
Which versions are affected by CVE-2020-28214?
It affects 1 product.
Products include Schneider-Electric Modicon M221 Firmware.
How do I fix CVE-2020-28214?
No fix has been published for CVE-2020-28214 yet. Limit exposure of the affected software until one is available.
Is CVE-2020-28214 being exploited?
There is no known exploitation of CVE-2020-28214 in the wild and no public exploit code.
Other vulnerabilities in Modicon M221 (all references, all versions)
- CVE-2018-7790 Auth bypass in Modicon M221, all references, all versions prior to firmware V1.6.2.0
- CVE-2018-7791 Auth bypass in Modicon M221, all references, all versions prior to firmware V1.6.2.0
- CVE-2018-7821 Denial of service in SoMachine Basic and Modicon M221, SoMachine Basic, all versions Modicon M221, all references, all versions prior to firmware V1.10.0.0
- CVE-2018-7792 Weak cryptography in Modicon M221, all references, all versions prior to firmware V1.6.2.0
- CVE-2020-7565 Weak cryptography in Modicon M221, all references, all versions
Sources
Also known as GHSA-w259-g563-xw2j.