by Kastro
Paper/Archive/CVE-2022-51026

CVE-2022-51026

bytebase bytebase — Bytebase 0.12.0 before 1.0.1 Authentication Bypass via GitLab Self-Hosted Login

EPSS 0.6%CVSS 9.8
critical.is priorityof 100
39
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 49.3.493 × 209.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
bytebase0.12.0 – < 1.0.11.0.1CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

advisorygithub.com/bytebase/bytebase/security/advisories/GHSA-5r3p-6rj5-7937patchgithub.com/bytebase/bytebase/commit/d69e682243b25b51dd52912a26e2f259b5f3db2dpatchgithub.com/bytebase/bytebase/pull/834writeupgithub.com/bytebase/bytebase/blob/1.0.0/server/auth.go#L79-L93refgithub.com/bytebase/bytebase/releases/tag/1.0.1refgithub.com/bytebase/bytebasewriteupvulncheck.com/advisories/bytebase-0.12.0-before-1.0.1-authentication-bypass-via-gitlab-self-hosted-login