Vulnerability Description
Open Policy Agent (OPA) is an open source, general-purpose policy engine. The Rego compiler provides a (deprecated) `WithUnsafeBuiltins` function, which allows users to provide a set of built-in functions that should be deemed unsafe — and as such rejected — by the compiler if encountered in the policy compilation stage. A bypass of this protection has been found, where the use of the `with` keyword to mock such a built-in function (a feature introduced in OPA v0.40.0), isn’t taken into account by `WithUnsafeBuiltins`. Multiple conditions need to be met in order to create an adverse effect. Version 0.43.1 contains a patch for this issue. As a workaround, avoid using the `WithUnsafeBuiltins` function and use the `capabilities` feature instead.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openpolicyagent | Open Policy Agent | >= 0.40.0, < 0.43.1 |
Related Weaknesses (CWE)
References
- https://github.com/open-policy-agent/opa/commit/25a597bc3f4985162e7f65f9c36599f4PatchThird Party Advisory
- https://github.com/open-policy-agent/opa/commit/3e8c754ed007b22393cf65e48751ad9fPatchThird Party Advisory
- https://github.com/open-policy-agent/opa/pull/4540ExploitPatchThird Party Advisory
- https://github.com/open-policy-agent/opa/pull/4616ExploitPatchThird Party Advisory
- https://github.com/open-policy-agent/opa/releases/tag/v0.43.1Third Party Advisory
- https://github.com/open-policy-agent/opa/security/advisories/GHSA-f524-rf33-2jjrExploitPatchThird Party Advisory
- https://github.com/open-policy-agent/opa/commit/25a597bc3f4985162e7f65f9c36599f4PatchThird Party Advisory
- https://github.com/open-policy-agent/opa/commit/3e8c754ed007b22393cf65e48751ad9fPatchThird Party Advisory
- https://github.com/open-policy-agent/opa/pull/4540ExploitPatchThird Party Advisory
- https://github.com/open-policy-agent/opa/pull/4616ExploitPatchThird Party Advisory
- https://github.com/open-policy-agent/opa/releases/tag/v0.43.1Third Party Advisory
- https://github.com/open-policy-agent/opa/security/advisories/GHSA-f524-rf33-2jjrExploitPatchThird Party Advisory
FAQ
What is CVE-2022-36085?
CVE-2022-36085 is a vulnerability with a CVSS score of 7.4 (HIGH). Open Policy Agent (OPA) is an open source, general-purpose policy engine. The Rego compiler provides a (deprecated) `WithUnsafeBuiltins` function, which allows users to provide a set of built-in funct...
How severe is CVE-2022-36085?
CVE-2022-36085 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-36085?
Check the references section above for vendor advisories and patch information. Affected products include: Openpolicyagent Open Policy Agent.