CSRF Attack via CORS Preflight Requests with Spring MVC or Spring WebFlux
CVE-2020-5397

5.3MEDIUM

Key Information:

Vendor

Spring

Status
Spring Framework
Vendor
CVE Published:
17 January 2020

What is CVE-2020-5397?

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 Version(s)

Spring Framework 5.2

References

https://www.oracle.com/security-alerts/cpuapr2020.html
x_refsource_MISC
https://www.oracle.com/security-alerts/cpujul2020.html
x_refsource_MISC
https://pivotal.io/security/cve-2020-5397
x_refsource_CONFIRM

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.