Vulnerability in clickvisual

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

ClickVisual through 1.1.2 contains a missing authorization vulnerability in the /api/v2/reports handlers that allows authenticated low-privileged users to access ClickHouse instances they were not granted. Attackers can iterate the instance-id parameter in ReportSourceDatabases, ReportSourceTables, ReportTableColumns and WhereCheckRun to enumerate schemas and infer row counts of restricted tables.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/clickvisual/clickvisual/blob/v1.1.2/api/internal/api/apiv2/report/report.go
• github.com/clickvisual/clickvisual/blob/v1.1.2/api/internal/service/report/metadata.go
• hackmd.io/@hieuPenguinnn/clickvisual-report-module-missing-authz-cross-instance-idor
• www.vulncheck.com/advisories/clickvisual-through-1.1.2-missing-authorization-in-apiv2-r…