Description
Bytebase 0.12.0 before 1.0.1 contains an authentication bypass vulnerability that allows unauthenticated attackers to log in as any user. The flaw stems from trusting client-supplied GitLab provider configuration in the POST /api/auth/login/GITLAB_SELF_HOST endpoint. Attackers can set instanceUrl to a server they control that returns an active user with a chosen email. Bytebase then issues session tokens for that principal, letting attackers impersonate existing users including the Owner or create new members.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| bytebase | bytebase | 0.12.0 – < 1.0.1 | 1.0.1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/bytebase/bytebase | < 1.0.1 | 1.0.1 | GHSA-5r3p-6rj5-7937 |
References
- GitHub Security Advisory (GHSA-5r3p-6rj5-7937) vendor-advisory
- https://github.com/bytebase/bytebase/commit/d69e682243b25b51dd52912a26e2f259b5f3db2d patch
- https://github.com/bytebase/bytebase/pull/834 patch issue-tracking
- https://github.com/bytebase/bytebase/blob/1.0.0/server/auth.go#L79-L93 technical-description
- bytebase 1.0.1 Release Notes release-notes
- https://github.com/bytebase/bytebase product
- VulnCheck Advisory: Bytebase 0.12.0 before 1.0.1 Authentication Bypass via GitLab Self-Hosted Login third-party-advisory