CVE-2021-41230: Github.com/pomerium/pomerium OIDC Claims Not Updated From Vulnerability

Q: What is CVE-2021-41230?

CVE-2021-41230 is a security vulnerability in Github.com/pomerium/pomerium involving OIDC claims not updated from Identity Provider in Pomerium under CWE-863: Incorrect Authorization.

Q: Which Github.com/pomerium/pomerium versions are affected?

Affected versions include releases prior to 0.15.6 across affected packages: github.com/pomerium/pomerium.

Q: What version fixes CVE-2021-41230?

Upgrading to 0.15.6 (or the latest patched release for your respective branch) resolves the vulnerability.

Q: Is github.com/pomerium/pomerium affected?

Yes, github.com/pomerium/pomerium is affected in releases prior to 0.15.6. Upgrade your dependency to 0.15.6 or later.

Q: What is the CVSS score of CVE-2021-41230?

CVE-2021-41230 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

Q: What CWE is associated with CVE-2021-41230?

CVE-2021-41230 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).

Q: How can I check Go dependencies for CVE-2021-41230?

Run the dependency tree command: 'inspect dependencies for github.com/pomerium/pomerium'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.

MODERATE

Advisory Identifier: GHSA-j6wp-3859-vxfg

CVSS 5.3

CWE-863

Published 2021-11-10

Advisory Summary

CVE-2021-41230 is a MODERATE (CVSS 5.3) oidc claims not updated from vulnerability (CWE-863: Incorrect Authorization) affecting Github.com/pomerium/pomerium libraries in the Go ecosystem. The issue involves oidc claims not updated from identity provider in pomerium. Remediation is available by upgrading affected packages to version 0.15.6.

CVE-2021-41230 at a Glance

CVE Identifier CVE-2021-41230

GHSA Identifier GHSA-j6wp-3859-vxfg

Severity MODERATE

CVSS v3.1 Base Score 5.3

CWE Classification CWE-863: Incorrect Authorization

Affected Product Github.com/pomerium/pomerium

Package Ecosystem Go

Published Date 2021-11-10

Last Updated 2021-11-08

Security Impact

CVSS: 5.3

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

Attack Vector Network (AV:N)

Attack Complexity High (AC:H)

Privileges Required Low (PR:L)

User Interaction None (UI:N)

Scope Unchanged (S:U)

Confidentiality High (C:H)

Integrity None (I:N)

Availability None (A:N)

How to Fix CVE-2021-41230

To remediate this vulnerability, upgrade all affected Github.com/pomerium/pomerium 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/pomerium/pomerium fixed: 0.15.6

Upgrade github.com/pomerium/pomerium to 0.15.6

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/pomerium/pomerium

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-41230, inspect your project dependencies for Github.com/pomerium/pomerium:

inspect dependencies for github.com/pomerium/pomerium

Analyze the terminal output to locate any version of Github.com/pomerium/pomerium in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.15.6), 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-863: Incorrect Authorization, where the product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. In Github.com/pomerium/pomerium, 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

### Impact Changes to the OIDC claims of a user after initial login are not reflected in policy evaluation when using [`allowed_idp_claims`](https://www.pomerium.com/reference/#allowed-idp-claims) as part of policy. If using `allowed_idp_claims` and a user's claims are changed, Pomerium can make incorrect authorization decisions. ### Patches v0.15.6 ### Workarounds - Clear data on `databroker` service by clearing redis or restarting the in-memory databroker to force claims to be updated ### References https://github.com/pomerium/pomerium/pull/2724 ### For more information If you have any questions or comments about this advisory: * Open an issue in [Pomerium](https://github.com/pomerium/pomerium) * Email us at [security@pomerium.com](mailto:security@pomerium.com)

CVE-2021-41230 Affected Github.com/pomerium/pomerium Versions

1 component(s)

Fixed Versions:

0.15.6

Product / Package	Ecosystem	Affected Versions	Fixed Version
github.com/pomerium/pomerium golang/github.com/pomerium/pomerium	Go	≥ 0.14.0 < 0.15.6	0.15.6

References

GitHub Advisory / Wiki ADVISORY

https://github.com/pomerium/pomerium/security/advisories/GHSA-j6wp-3859-vxfg

NVD — CVE-2021-41230 NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-41230

Github.com/pomerium/pomerium Source Repository REPOSITORY

https://github.com/pomerium/pomerium/pull/2724

Security Fix Commit FIX COMMIT

https://github.com/pomerium/pomerium/commit/f20542c4bf2cc691e4c324f7ec79e02e46d95511

Github.com/pomerium/pomerium Source Repository REPOSITORY

https://github.com/pomerium/pomerium

pkg.go.dev/vuln/go-2021-0258 WEB

https://pkg.go.dev/vuln/GO-2021-0258

Frequently Asked Questions

What is CVE-2021-41230?

CVE-2021-41230 is a security vulnerability in Github.com/pomerium/pomerium involving OIDC claims not updated from Identity Provider in Pomerium under CWE-863: Incorrect Authorization.

Which Github.com/pomerium/pomerium versions are affected?

Affected versions include releases prior to 0.15.6 across affected packages: github.com/pomerium/pomerium.

What version fixes CVE-2021-41230?

Upgrading to 0.15.6 (or the latest patched release for your respective branch) resolves the vulnerability.

Is github.com/pomerium/pomerium affected?

Yes, github.com/pomerium/pomerium is affected in releases prior to 0.15.6. Upgrade your dependency to 0.15.6 or later.

What is the CVSS score of CVE-2021-41230?

CVE-2021-41230 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.

What CWE is associated with CVE-2021-41230?

CVE-2021-41230 is classified under CWE-863: Incorrect Authorization (The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.).

How can I check Go dependencies for CVE-2021-41230?

Run the dependency tree command: 'inspect dependencies for github.com/pomerium/pomerium'. 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-j6wp-3859-vxfg",
  "modified" : "2021-11-08T21:37:07Z",
  "published" : "2021-11-10T16:52:24Z",
  "aliases" : [ "CVE-2021-41230" ],
  "summary" : "OIDC claims not updated from Identity Provider in Pomerium",
  "details" : "### Impact\nChanges to the OIDC claims of a user after initial login are not reflected in policy evaluation when using [`allowed_idp_claims`](https://www.pomerium.com/reference/#allowed-idp-claims) as part of policy.  If using `allowed_idp_claims` and a user's claims are changed, Pomerium can make incorrect authorization decisions.\n\n### Patches\nv0.15.6\n\n### Workarounds\n- Clear data on `databroker` service by clearing redis or restarting the in-memory databroker to force claims to be updated\n\n### References\nhttps://github.com/pomerium/pomerium/pull/2724\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [Pomerium](https://github.com/pomerium/pomerium)\n* Email us at [security@pomerium.com](mailto:security@pomerium.com)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/pomerium/pomerium"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.14.0"
      }, {
        "fixed" : "0.15.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/pomerium/pomerium/security/advisories/GHSA-j6wp-3859-vxfg"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-41230"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pomerium/pomerium/pull/2724"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pomerium/pomerium/commit/f20542c4bf2cc691e4c324f7ec79e02e46d95511"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pomerium/pomerium"
  }, {
    "type" : "WEB",
    "url" : "https://pkg.go.dev/vuln/GO-2021-0258"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-863" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-11-08T21:37:07Z",
    "nvd_published_at" : "2021-11-05T23:15:00Z"
  }
}

CVSS V3

5.3 MODERATE