CVE-2021-22538

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Summary

CVECVE-2021-22538
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-03-31 21:15:00 UTC
Updated2021-04-06 14:11:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-276

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Google Exposure Notifications Verification Server All All All All

References

ReferenceSourceLinkTags
Release v0.24.0 · google/exposure-notifications-verification-server · GitHub CONFIRM github.com
Privilege escalation in rbac · Advisory · google/exposure-notifications-verification-server · GitHub CONFIRM github.com
Release v0.23.1 · google/exposure-notifications-verification-server · GitHub CONFIRM github.com
Merge pull request from GHSA-5v95-v8c8-3rh6 · google/exposure-notifications-verification-server@eb8cf40 · GitHub CONFIRM github.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: Michael Mazzolini (Ethical Hacker at WHO)

Legacy QID Mappings

  • 982434 Go (go) Security Update for github.com/google/exposure-notifications-verification-server (GHSA-5v95-v8c8-3rh6)

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