VDB
CVE-2021-22538
CVE-2021-22538
PUBLISHED
CVSS 6.300000190734863 MEDIUM
A privilege escalation vulnerability impacting the Google Exposure Notification Verification Server (versions prior to 0.23.1), allows an attacker who (1) has UserWrite permissions and (2) is using a carefully crafted request or malicious proxy, to create another user with higher privileges than their own. This occurs due to insufficient checks on the allowed set of permissions. The new user creation event would be captured in the Event Log.
EPSS 0.72% · 52.3th percentile
Risk Scores
CVSS 3.1
6.300000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
EPSS Score
0.72%
52.3th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Google LLC | Exposure Notifications Verification Server | stable |
| exposure_notifications_verification_server | 0 | |
| github.com | google/exposure-notifications-verification-server | 0 |
Timeline
- Mar 31, 2021 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Oct 27, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 2, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- May 4, 2022 EPSS Score
- Jul 6, 2022 EPSS Score
- Sep 8, 2022 EPSS Score
References
- https://github.com/google/exposure-notifications-verification-server/security/advisories/GHSA-5v95-v8c8-3rh6 url
- https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.24.0 url
- https://nvd.nist.gov/vuln/detail/CVE-2021-22538 advisory
- https://github.com/google/exposure-notifications-verification-server/commit/eb8cf40b12dbe79304f1133c06fb73419383cd95 url
- https://github.com/google/exposure-notifications-verification-server/releases/tag/v0.23.1 technical