CVE-2020-26214
LDAP authentication bypass with empty password
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.
How to fix CVE-2020-26214
To remediate CVE-2020-26214, upgrade the affected package to a fixed version below.
- —upgrade to 8.1.0 or later
- —upgrade to 2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65 or later
Is CVE-2020-26214 being exploited?
Likely — EPSS is 88.9%, placing CVE-2020-26214 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (2)
- >= 8.0.0, < 8.1.0
- from 0, < 2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65 | from 0, < 7.5.7, >= 8.0.0, < 8.1.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N |
| osv | CVSS 3.1 | CRITICAL9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |