Description
In Alerta before version 8.1.0, 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 authentication mechanism for anonymous authorization are affected. A fix has been implemented in version 8.1.0 that returns HTTP 401 Unauthorized response for any authentication attempts where the password field is empty. As a workaround LDAP administrators can disallow unauthenticated bind requests by clients.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| alerta | alerta | < 8.1.0 | — |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Alerta < 8.1.0 - Authentication Bypass http/cves/2020/CVE-2020-26214.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | alerta-server | >= 8.0.0, < 8.1.0 | 8.1.0 | GHSA-5hmm-x8q8-w5jh |
| PyPI | alerta-server | < 7.5.7 | 7.5.7 | GHSA-5hmm-x8q8-w5jh |
| PyPI | alerta-server | < 7.5.7 · >= 8.0.0, < 8.1.0 | 7.5.7, 8.1.0 | PYSEC-2020-159 |
References
- https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh
- https://github.com/alerta/alerta/issues/1277
- https://github.com/alerta/alerta/pull/1345
- https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65
- https://pypi.org/project/alerta-server/8.1.0/
- https://tools.ietf.org/html/rfc4513#section-5.1.2