Users may be able to bypass LDAP authentication if they provide an empty password when Alerta server is configure to use LDAP as the authorization provider.
Only deployments where LDAP servers are configured to allow unauthenticated binds (eg. default on Active Directory) are affected.
A fix has been implemented that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. See https://github.com/alerta/alerta/pull/1345
LDAP administrators can disallow unauthenticated bind requests by clients.
https://tools.ietf.org/html/rfc4513#section-5.1.2
https://pypi.org/project/alerta-server/8.1.0/
If you have any questions or comments about this advisory:
github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65
github.com/alerta/alerta/issues/1277
github.com/alerta/alerta/pull/1345
github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh
nvd.nist.gov/vuln/detail/CVE-2020-26214
pypi.org/project/alerta-server/8.1.0
tools.ietf.org/html/rfc4513#section-5.1.2