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CVE-2021-44657

Date: December 15, 2021

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.

Language: Python

Severity Score

Related Resources (6)

https://github.com/pallets/jinja/issues/549
https://nvd.nist.gov/vuln/detail/CVE-2021-44657
https://github.com/StackStorm/st2/pull/5359
https://stackstorm.com/2021/12/16/stackstorm-v3-6-0-released/
https://podalirius.net/en/articles/python-vulnerabilities-code-execution-in-jinja-templates/
https://www.mend.io/vulnerability-database/CVE-2021-44657

Severity Score

Weakness Type (CWE)

Improper Control of Generation of Code ('Code Injection')

CWE-94

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): COMPLETE
Integrity (I): COMPLETE
Availability (A): COMPLETE
Additional information:

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