CVE-2022-33082: Github.com/open policy agent/opa Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-2m4x-4q9j-w97g
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CVSS 7.5
CWE-703
Published
Advisory Summary

CVE-2022-33082 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-703: Improper Check or Handling of Exceptional Conditions) affecting Github.com/open policy agent/opa libraries in the Go ecosystem. The issue involves denial of service in open policy agent. Remediation is available by upgrading affected packages to version 0.42.0.

CVE-2022-33082 at a Glance

CVE Identifier CVE-2022-33082
GHSA Identifier GHSA-2m4x-4q9j-w97g
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-703: Improper Check or Handling of Exceptional Conditions
Affected Product Github.com/open policy agent/opa
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2022-33082

To remediate this vulnerability, upgrade all affected Github.com/open policy agent/opa dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/open-policy-agent/opa fixed: 0.42.0 
Upgrade github.com/open-policy-agent/opa to 0.42.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/open-policy-agent/opa

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-33082, inspect your project dependencies for Github.com/open policy agent/opa:

inspect dependencies for github.com/open-policy-agent/opa

Analyze the terminal output to locate any version of Github.com/open policy agent/opa in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.42.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-703: Improper Check or Handling of Exceptional Conditions, where the product does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the product. In Github.com/open policy agent/opa, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

An issue in the AST parser (ast/compile.go) of Open Policy Agent v0.10.2 allows attackers to cause a Denial of Service (DoS) via a crafted input.

CVE-2022-33082 Affected Github.com/open policy agent/opa Versions

1 component(s)
Fixed Versions:
0.42.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/open-policy-agent/opa
golang/github.com/open-policy-agent/opa
Go
< 0.42.0
0.42.0

References

NVD — CVE-2022-33082 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-33082
Github.com/open policy agent/opa Source Repository REPOSITORY
https://github.com/open-policy-agent/opa/issues/4761
Github.com/open policy agent/opa Source Repository REPOSITORY
https://github.com/open-policy-agent/opa/issues/4762
Github.com/open policy agent/opa Source Repository REPOSITORY
https://github.com/open-policy-agent/opa/pull/4701
Security Fix Commit FIX COMMIT
https://github.com/open-policy-agent/opa/commit/064f6168a8dfebdeb2ea147f7882bb9f5d2b7f67
Github.com/open policy agent/opa Source Repository REPOSITORY
https://github.com/open-policy-agent/opa
Github.com/open policy agent/opa Source Repository REPOSITORY
https://github.com/open-policy-agent/opa/blob/598176de326025451025225aca53e85708d5f1db/ast/compile.go#L1224
pkg.go.dev/vuln/go-2022-0574 WEB
https://pkg.go.dev/vuln/GO-2022-0574

Frequently Asked Questions

What is CVE-2022-33082?
CVE-2022-33082 is a security vulnerability in Github.com/open policy agent/opa involving Denial of service in Open Policy Agent under CWE-703: Improper Check or Handling of Exceptional Conditions.
Which Github.com/open policy agent/opa versions are affected?
Affected versions include releases prior to 0.42.0 across affected packages: github.com/open-policy-agent/opa.
What version fixes CVE-2022-33082?
Upgrading to 0.42.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/open-policy-agent/opa affected?
Yes, github.com/open-policy-agent/opa is affected in releases prior to 0.42.0. Upgrade your dependency to 0.42.0 or later.
What is the CVSS score of CVE-2022-33082?
CVE-2022-33082 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2022-33082?
CVE-2022-33082 is classified under CWE-703: Improper Check or Handling of Exceptional Conditions (The product does not properly anticipate or handle exceptional conditions that rarely occur during normal operation of the product.).
How can I check Go dependencies for CVE-2022-33082?
Run the dependency tree command: 'inspect dependencies for github.com/open-policy-agent/opa'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2m4x-4q9j-w97g",
  "modified" : "2024-05-20T21:27:56Z",
  "published" : "2022-07-01T00:01:03Z",
  "aliases" : [ "CVE-2022-33082" ],
  "summary" : "Denial of service in Open Policy Agent ",
  "details" : "An issue in the AST parser (ast/compile.go) of Open Policy Agent v0.10.2 allows attackers to cause a Denial of Service (DoS) via a crafted input.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/open-policy-agent/opa"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.42.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-33082"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-policy-agent/opa/issues/4761"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-policy-agent/opa/issues/4762"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-policy-agent/opa/pull/4701"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-policy-agent/opa/commit/064f6168a8dfebdeb2ea147f7882bb9f5d2b7f67"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/open-policy-agent/opa"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open-policy-agent/opa/blob/598176de326025451025225aca53e85708d5f1db/ast/compile.go#L1224"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2022-0574"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-703" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-07-06T19:52:00Z",
    "nvd_published_at" : "2022-06-30T22:15:00Z"
  }
}