CVE-2021-44657

Public Exploit

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.

8.8

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 2.56% Top 20%

Vendor Advisory stackstorm.com

Affected: n/a n/a

References

Link	Tags
https://github.com/StackStorm/st2/pull/5359	third party advisory patch
https://podalirius.net/en/articles/python-vulnerabilities-code-execution-in-jinja-templates/	third party advisory exploit
https://github.com/pallets/jinja/issues/549	third party advisory issue tracking exploit
https://stackstorm.com/2021/12/16/stackstorm-v3-6-0-released/	release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-44657?: CVE-2021-44657 has been scored as a high severity vulnerability.
How to fix CVE-2021-44657?: To fix CVE-2021-44657, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-44657 being actively exploited in the wild?: It is possible that CVE-2021-44657 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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