CVE-2022-36085

2022-09-0814:15:08

CWE-693

CWE-20

[email protected]

web.nvd.nist.gov

240

open policy agent

opa

cve-2022-36085

security vulnerability

rego compiler

withunsafebuiltins

version 0.43.1

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.3 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

61.6%

JSON

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.

Affected configurations

Vulners

NVD

Node

open-policy-agentopaRange0.40.0–0.43.1

CPENameOperatorVersion
openpolicyagent:open_policy_agentopenpolicyagent open policy agentlt0.43.1

CPE	Name	Operator	Version
openpolicyagent:open_policy_agent	openpolicyagent open policy agent	lt	0.43.1

CNA Affected

[
  {
    "product": "opa",
    "vendor": "open-policy-agent",
    "versions": [
      {
        "status": "affected",
        "version": ">= 0.40.0, < 0.43.1"
      }
    ]
  }
]