GHSA-7pm4-g2qj-j85x

CSRF attack via CORS preflight requests with Spring MVC or Spring WebFlux

At a glance

Published
Updated
CVE
CVE-2020-5397
CVSS_V3
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

Spring Framework, versions 5.2.x prior to 5.2.3 are vulnerable to CSRF attacks through CORS preflight requests that target Spring MVC (spring-webmvc module) or Spring WebFlux (spring-webflux module) endpoints. Only non-authenticated endpoints are vulnerable because preflight requests should not include credentials and therefore requests should fail authentication. However a notable exception to this are Chrome based browsers when using client certificates for authentication since Chrome sends TLS client certificates in CORS preflight requests in violation of spec requirements. No HTTP body can be sent or received as a result of this attack.

Affected packages

PackageVersions
Maven · org.springframework:spring-webmvcintroduced 5.2.0, fixed 5.2.3
Maven · org.springframework:spring-webfluxintroduced 5.2.0, fixed 5.2.3

References

Sources

SourceLicence
OSV.devCC-BY 4.0 — GitHub Advisory Database