GHSA-2rmj-mq67-h97g

Spring Framework DoS via conditional HTTP request

### Description Applications that parse ETags from `If-Match` or `If-None-Match` request headers are vulnerable to DoS attack. ### Affected Spring Products and Versions org.springframework:spring-web in versions 6.1.0 through 6.1.11 6.0.0 through 6.0.22 5.3.0 through 5.3.37 Older, unsupported versions are also affected ### Mitigation Users of affected versions should upgrade to the corresponding fixed version. 6.1.x -> 6.1.12 6.0.x -> 6.0.23 5.3.x -> 5.3.38 No other mitigation steps are necessary. Users of older, unsupported versions could enforce a size limit on `If-Match` and `If-None-Match` headers, e.g. through a Filter.