Overview
- 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.
- Source
- security-advisories@github.com
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 9.8
- Impact score
- 5.9
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity
- CRITICAL
Weaknesses
- nvd@nist.gov
- NVD-CWE-noinfo
- security-advisories@github.com
- CWE-20
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:openpolicyagent:open_policy_agent:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "24044142-C7B3-4994-9F36-5ED0299C8E5B",
"versionEndExcluding": "0.43.1",
"versionStartIncluding": "0.40.0"
}
],
"operator": "OR"
}
]
}
]