CVE-2020-26214

LDAP authentication bypass in Alerta

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.

Category

9.1
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 84.89% Top 5%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory pypi.org Third-Party Advisory ietf.org
Affected: alerta alerta
Published at:
Updated at:

References

Link Tags
https://github.com/alerta/alerta/security/advisories/GHSA-5hmm-x8q8-w5jh third party advisory
https://github.com/alerta/alerta/issues/1277 third party advisory
https://github.com/alerta/alerta/pull/1345 third party advisory
https://github.com/alerta/alerta/commit/2bfa31779a4c9df2fa68fa4d0c5c909698c5ef65 third party advisory patch
https://pypi.org/project/alerta-server/8.1.0/ third party advisory
https://tools.ietf.org/html/rfc4513#section-5.1.2 third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-26214?
CVE-2020-26214 has been scored as a critical severity vulnerability.
How to fix CVE-2020-26214?
To fix CVE-2020-26214, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-26214 being actively exploited in the wild?
It is possible that CVE-2020-26214 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~85% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-26214?
CVE-2020-26214 affects alerta alerta.
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