Ecosyste.ms: Advisories
An open API service providing security vulnerability metadata for many open source software ecosystems.
Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTV2OTUtdjhjOC0zcmg2
Privilege escalation in rbac
Impact
Using a carefully crafted request or malicious proxy, a user with UserWrite
permissions could create another user with higher privileges than their own due to insufficient checks on the allowed set of permissions. The event would be captured in the Event Log.
Patches
The issue has been fixed in 0.24.0 and 0.23.1.
Workarounds
For users who are unable to upgrade, we recommend auditing users who have UserWrite
permissions and regularly reviewing the Event Log for malicious activity.
Kudos
Thank you to Michael Mazzolini (Ethical Hacker at WHO) for finding and disclosing this vulnerability.
Permalink: https://github.com/advisories/GHSA-5v95-v8c8-3rh6JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTV2OTUtdjhjOC0zcmg2
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: 10 months ago
CVSS Score: 8.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Identifiers: GHSA-5v95-v8c8-3rh6, CVE-2021-22538
References:
- https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-5v95-v8c8-3rh6
- https://nvd.nist.gov/vuln/detail/CVE-2021-22538
- https://github.com/google/exposure-notifications-verification-server/commit/eb8cf40b12dbe79304f1133c06fb73419383cd95
- https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.23.1
- https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.24.0
- https://github.com/advisories/GHSA-5v95-v8c8-3rh6
Affected Packages
go:github.com/google/exposure-notifications-verification-server
Versions: < 0.23.0Fixed in: 0.23.1