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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTVobW0teDhxOC13NWpo

LDAP authentication bypass with empty password

Impact

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.

Patches

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

Workarounds

LDAP administrators can disallow unauthenticated bind requests by clients.

References

https://tools.ietf.org/html/rfc4513#section-5.1.2
https://pypi.org/project/alerta-server/8.1.0/

For more information

If you have any questions or comments about this advisory:

Permalink: https://github.com/advisories/GHSA-5hmm-x8q8-w5jh
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTVobW0teDhxOC13NWpo
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 3 years ago
Updated: over 1 year ago


CVSS Score: 9.1
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Identifiers: GHSA-5hmm-x8q8-w5jh, CVE-2020-26214
References: Repository: https://github.com/alerta/alerta
Blast Radius: 11.2

Affected Packages

pypi:alerta-server
Dependent packages: 0
Dependent repositories: 17
Downloads: 1,266 last month
Affected Version Ranges: < 7.5.7, >= 8.0.0, < 8.1.0
Fixed in: 7.5.7, 8.1.0
All affected versions: 3.1.2, 3.2.0, 3.2.3, 3.2.4, 3.2.6, 3.2.7, 3.2.8, 3.2.9, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.3.7, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.0.8, 4.0.9, 4.1.0, 4.1.1, 4.1.2, 4.1.4, 4.1.5, 4.1.6, 4.1.7, 4.1.8, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.3.0, 4.3.1, 4.3.2, 4.4.0, 4.4.1, 4.4.2, 4.4.5, 4.4.6, 4.4.7, 4.4.8, 4.4.9, 4.4.10, 4.4.11, 4.4.12, 4.4.13, 4.5.0, 4.5.1, 4.5.2, 4.5.3, 4.5.4, 4.5.5, 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4, 4.6.5, 4.6.6, 4.6.7, 4.6.8, 4.6.9, 4.7.0, 4.7.1, 4.7.2, 4.7.3, 4.7.4, 4.7.5, 4.7.6, 4.7.7, 4.7.8, 4.7.9, 4.7.10, 4.7.11, 4.7.12, 4.7.13, 4.7.14, 4.7.15, 4.7.16, 4.7.17, 4.7.18, 4.7.19, 4.7.20, 4.7.21, 4.7.22, 4.7.23, 4.7.24, 4.7.25, 4.7.26, 4.7.27, 4.7.28, 4.7.29, 4.7.30, 4.7.31, 4.7.32, 4.7.33, 4.8.0, 4.8.1, 4.8.2, 4.8.3, 4.8.4, 4.8.5, 4.8.6, 4.8.7, 4.8.8, 4.8.9, 4.8.10, 4.8.11, 4.8.12, 4.8.13, 4.8.14, 4.8.15, 4.8.16, 4.8.17, 4.8.18, 4.8.19, 4.8.20, 4.8.21, 4.8.22, 4.8.23, 4.8.24, 4.8.25, 4.8.26, 4.9.0, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 4.9.5, 4.9.6, 4.10.0, 4.10.1, 4.10.2, 4.10.3, 4.10.4, 4.10.5, 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.0.6, 5.0.7, 5.0.8, 5.0.9, 5.1.0, 5.1.1, 5.2.0, 5.2.1, 5.2.2, 5.2.3, 5.2.4, 5.2.5, 5.2.6, 5.2.7, 5.2.8, 5.2.9, 6.0.0, 6.0.1, 6.1.0, 6.2.0, 6.2.1, 6.3.0, 6.3.1, 6.3.2, 6.4.0, 6.5.0, 6.6.0, 6.6.1, 6.7.0, 6.7.1, 6.7.2, 6.7.3, 6.7.4, 6.7.5, 6.8.0, 6.8.1, 6.8.2, 6.8.3, 6.8.4, 6.8.5, 7.0.0, 7.0.1, 7.1.0, 7.1.1, 7.1.2, 7.2.0, 7.2.1, 7.2.2, 7.2.3, 7.2.4, 7.2.5, 7.2.6, 7.2.7, 7.2.8, 7.2.9, 7.2.10, 7.2.11, 7.3.0, 7.3.1, 7.3.2, 7.4.0, 7.4.1, 7.4.4, 7.4.5, 7.4.6, 7.5.0, 7.5.1, 7.5.2, 7.5.3, 7.5.4, 7.5.5, 7.5.6, 8.0.0, 8.0.1, 8.0.2, 8.0.3
All unaffected versions: 7.5.7, 8.1.0, 8.2.0, 8.3.0, 8.3.1, 8.3.2, 8.3.3, 8.4.0, 8.4.1, 8.5.0, 8.6.0, 8.6.2, 8.6.3, 8.6.4, 8.6.5, 8.7.0, 9.0.0, 9.0.1, 9.0.2, 9.0.3