CVE-2021-27213 Deserialization in n/a
Attackers can execute arbitrary code via unsafe YAML deserialization in pystemon's config.py, requiring a patch to use SafeLoader.
- 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-2021-27213?
CVE-2021-27213 is a critical unsafe deserialization vulnerability in n/a, published on 14 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
config.py in pystemon before 2021-02-13 allows code execution via YAML deserialization because SafeLoader and safe_load are not used.
Weakness: CWE-502
Which versions are affected by CVE-2021-27213?
It affects 1 product.
Products include Pystemon Project Pystemon.
How do I fix CVE-2021-27213?
No fix has been published for CVE-2021-27213 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2021-27213 being exploited?
There is no known exploitation of CVE-2021-27213 in the wild and no public exploit code.
Sources
Also known as GHSA-63mg-762w-r25h.