All Vulnerability Reports

CVE-2018-15801: Authorization Bypass During JWT Issuer Validation with spring-security


Severity

Low

Vendor

Spring by Pivotal

Description

Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.

Affected Pivotal Products and Versions

Severity is low unless otherwise noted.

  • Spring Framework 5.1 to 5.1.1
Mitigation

Users of affected versions should apply the following mitigation:

  • 5.1.x users should upgrade to 5.1.2

There are no other mitigation steps necessary.

Credit

This issue was identified and responsibly reported by Björn Bilger.

References
History

2018-12-18: Initial vulnerability report published.

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