Spring Security Advisories

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Spring-LDAP authentication with userSearch and STARTTLS allows authentication with arbitrary password

HIGH | OCTOBER 16, 2017 | CVE-2017-8028

Description

When connected to some LDAP servers, when no additional attributes are bound, and when using LDAP BindAuthenticator with org.springframework.ldap.core.support.DefaultTlsDirContextAuthenticationStrategy as the authentication strategy, and setting userSearch, authentication is allowed with an arbitrary password when the username is correct. This occurs because some LDAP vendors require an explicit operation for the LDAP bind to take effect.

Affected Spring Products and Versions

Spring LDAP:

  • 1.3.0 - 2.3.1

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.
Fix versionAvailability
2.3.2OSS

No further mitigation steps are necessary.

Credit

This vulnerability was responsibly reported by Tobias Schneider.

References

History

  • 2017-10-16: Initial vulnerability report published.

Reporting a vulnerability

To report a security vulnerability for a project within the Spring portfolio, see the Security Policy

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