CVE-2021-42561 Command injection in n/a

High 8.8 Published 12 Jan 2022 Updated 4 Aug 2024

Attackers can execute arbitrary shell commands via unsanitized input in the Human plugin when activated.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-42561?

CVE-2021-42561 is a high-severity command injection vulnerability in n/a, published on 12 Jan 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue was discovered in CALDERA 2.8.1. When activated, the Human plugin passes the unsanitized name parameter to a python "os.system" function. This allows attackers to use shell metacharacters (e.g., backticks "``" or dollar parenthesis "$()" ) in order to escape the current command and execute arbitrary shell commands.

Weakness: CWE-74

Which versions are affected by CVE-2021-42561?

It affects 1 product.

Products include Mitre Caldera.

How do I fix CVE-2021-42561?

No fix has been published for CVE-2021-42561 yet. Limit exposure of the affected software until one is available.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2021-42561 being exploited?

There is no known exploitation of CVE-2021-42561 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-3893-j6q6-whq8.