CVE-2023-45303: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

October 6, 2023 (updated October 17, 2023)

ThingsBoard before 3.5 allows Server-Side Template Injection if users are allowed to modify an email template, because Apache FreeMarker supports freemarker.template.utility.Execute (for content sent to the /api/admin/settings endpoint).

References

freemarker.apache.org/docs/api/freemarker/template/utility/Execute.html
github.com/advisories/GHSA-6pgr-j9v4-xfvv
herolab.usd.de/security-advisories/usd-2023-0010/
nvd.nist.gov/vuln/detail/CVE-2023-45303

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