CVE-2021-44657 Code injection in n/a

High 8.8 Published 15 Dec 2021 Updated 4 Aug 2024

Attackers can execute arbitrary system commands via unsandboxed Jinja templates in StackStorm, requiring an upgrade to secure the interpreter.

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-2021-44657?

CVE-2021-44657 is a high-severity code injection vulnerability in n/a, published on 15 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In StackStorm versions prior to 3.6.0, the jinja interpreter was not run in sandbox mode and thus allows execution of unsafe system commands. Jinja does not enable sandboxed mode by default due to backwards compatibility. Stackstorm now sets sandboxed mode for jinja by default.

Which versions are affected by CVE-2021-44657?

It affects 1 product.

Products include Stackstorm Stackstorm.

How do I fix CVE-2021-44657?

No fix has been published for CVE-2021-44657 yet. Limit exposure of the affected software until one is available.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2021-44657 being exploited?

There is no known exploitation of CVE-2021-44657 in the wild and no public exploit code.

Sources

Also known as GHSA-734q-6f9p-wxpv.