VulnerabilityModified
CVE-2021-44657
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.
HIGH 8.8EPSS 2.47%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a 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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.47% probability · 84th percentile
- CISA KEV
- Not listed
- Affected
- stackstorm/stackstorm
- Source
- cve@mitre.org
References
- https://github.com/StackStorm/st2/pull/5359Patch, Third Party Advisory
- https://github.com/pallets/jinja/issues/549Exploit, Issue Tracking, Third Party Advisory
- https://podalirius.net/en/articles/python-vulnerabilities-code-execution-in-jinja-templates/Exploit, Third Party Advisory
- https://stackstorm.com/2021/12/16/stackstorm-v3-6-0-released/Release Notes, Vendor Advisory
- https://github.com/StackStorm/st2/pull/5359Patch, Third Party Advisory
- https://github.com/pallets/jinja/issues/549Exploit, Issue Tracking, Third Party Advisory
- https://podalirius.net/en/articles/python-vulnerabilities-code-execution-in-jinja-templates/Exploit, Third Party Advisory
- https://stackstorm.com/2021/12/16/stackstorm-v3-6-0-released/Release Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.