CVE-2020-5407: Signature Wrapping Vulnerability with spring-security-saml2-service-provider
Spring by VMware
Spring Security versions 5.2.x prior to 5.2.4 and 5.3.x prior to 5.3.2 contain a signature wrapping vulnerability during SAML response validation. When using the spring-security-saml2-service-provider component, a malicious user can carefully modify an otherwise valid SAML response and append an arbitrary assertion that Spring Security will accept as valid.
Severity is medium unless otherwise noted.
- 5.2.x prior to 5.2.4
- 5.3.x prior to 5.3.2
Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:
This issue was identified and responsibly reported by Sam Tinklenberg.
2020-05-07: Initial vulnerability report published.