Vulnerability · Published Nov 5, 2021 · Assigned by GitHub_M
CVE-2021-41230OIDC claims not updated from Identity Provider in Pomerium
Medium 5.3
In plain English
A medium-severity incorrect authorization in pomerium from pomerium. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Pomerium is an open source identity-aware access proxy. In affected versions changes to the OIDC claims of a user after initial login are not reflected in policy evaluation when using `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. This issue has been resolved in v0.15.6. For users unable to upgrade clear data on `databroker` service by clearing redis or restarting the in-memory databroker to force claims to be updated.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/pomerium/pomerium | 0.15.6 | GHSA-j6wp-3859-vxfg |
| Go | github.com/pomerium/pomerium | 0.15.6 | GO-2021-0258 |
Affected products (as reported)
Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/pomerium/pomerium/security/advisories/GHSA-j6wp-3859-vxfg x_refsource_CONFIRM
- https://github.com/pomerium/pomerium/pull/2724 x_refsource_MISC