CVE-2020-5397: CSRF attack via CORS preflight requests with Spring MVC or Spring WebFlux

Quick answers

Is CVE-2020-5397 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2020-5397 being exploited in the wild.

How severe is CVE-2020-5397?

Low severity, with a CVSS score of 3, published 21 January 2020.

Which products and versions are affected?

org.springframework:spring-webflux (Maven) ECOSYSTEM:introduced=5.2.0,fixed=5.2.3; org.springframework:spring-webmvc (Maven) ECOSYSTEM:introduced=5.2.0,fixed=5.2.3.

Is there a fix for CVE-2020-5397?

Yes. org.springframework:spring-webflux (Maven): upgrade to 5.2.3 or later; org.springframework:spring-webmvc (Maven): upgrade to 5.2.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Am I affected by CVE-2020-5397?

Check whether you run org.springframework:spring-webflux (Maven) or org.springframework:spring-webmvc (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

• org.springframework:spring-webflux (Maven): upgrade to 5.2.3 or later

  # set org.springframework:spring-webflux to 5.2.3 in your pom.xml or build.gradle

• org.springframework:spring-webmvc (Maven): upgrade to 5.2.3 or later

  # set org.springframework:spring-webmvc to 5.2.3 in your pom.xml or build.gradle

Affected products

• org.springframework:spring-webflux (Maven) ECOSYSTEM:introduced=5.2.0,fixed=5.2.3
• org.springframework:spring-webmvc (Maven) ECOSYSTEM:introduced=5.2.0,fixed=5.2.3

Identifiers

• CVE-2020-5397
• GHSA-7pm4-g2qj-j85x