CVE-2020-5397

Name	CVE-2020-5397
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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libspring-java (PTS)	bullseye	4.3.30-1	fixed
	trixie, sid, bookworm	4.3.30-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libspring-java	source	(unstable)	(not affected)

Notes

- libspring-java <not-affected> (Only affects 5.2.x)
https://pivotal.io/security/cve-2020-5397
https://github.com/spring-projects/spring-framework/issues/24327
https://github.com/spring-projects/spring-framework/commit/bc7d01048579430b4b2df668178809b63d3f1929