Vulnerability in OpenCSG CSGHub

[ Description ]Official description

OpenCSG CSGHub through v2.6.0-ce contains an authorization bypass vulnerability in the unauthenticated file resolve route that allows remote attackers to read private repository files. Attackers can inject a percent-encoded current_user parameter into the file path, which the portal forwards with its server API key, to read files in private model, code or space repositories.

[ 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/OpenCSGs/csghub-server/blob/v2.6.0-ce/api/middleware/authenticator.go
• github.com/OpenCSGs/csghub/blob/v2.6.0-ce/internal/handlers/frontend/resolve.go
• github.com/OpenCSGs/csghub/blob/v2.6.0-ce/internal/routes/router.go
• github.com/OpenCSGs/csghub/blob/v2.6.0-ce/pkg/server/backend/csghubserver/download.go
• github.com/OpenCSGs/csghub/issues/1586
• github.com/OpenCSGs/csghub/releases/tag/v2.6.0-ce
• hackmd.io/@hieund/csghub-private-repo-file-read-idor
• www.vulncheck.com/advisories/opencsg-csghub-through-2.6.0-ce-unauthenticated-private-re…