Vulnerability in Sonatype Nexus Repository 3

[ Why it matters ]Priority signals

• Critical severity: CVSS 9.1

[ Description ]Official description

Sonatype Nexus Repository 3 Pro does not check the local account status when a user signs in through a configured SAML or OAuth2/OpenID Connect identity provider. A user whose account was disabled or locked by an administrator in Nexus Repository can sign in again with valid identity provider credentials for the same account, and then receives a new session with the roles of that account. The attacker needs no Nexus Repository session and no Nexus Repository privilege. The attacker needs a named account that holds valid credentials at the identity provider. The anonymous user is not part of this attack path.

[ 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

• help.sonatype.com/en/sonatype-nexus-repository-3-98-0-release-notes.html
• support.sonatype.com/hc/en-us/articles/56614238092947