CVE-2023-34036
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk32th percentile - higher than 32% of all known CVEs
Summary
Reactive web applications using Spring HATEOAS to produce hypermedia-based responses may be exposed to malicious forwarded headers if not behind a trusted proxy or lacking mechanisms to handle such headers.
Risk Assessment
Organizations may be vulnerable to attacks exploiting improperly forwarded headers, potentially leading to unauthorized access or data manipulation.
Recommendation
It is recommended to implement a trusted proxy to ensure the correctness of forwarded headers or to implement mechanisms to handle and discard malicious headers in the application.
Original NVD description (English source)
Reactive web applications that use Spring HATEOAS to produce hypermedia-based responses might be exposed to malicious forwarded headers if they are not behind a trusted proxy that ensures correctness of such headers, or if they don't have anything else in place to handle (and possibly discard) forwarded headers either in WebFlux or at the level of the underlying HTTP server. For the application to be affected, it needs to satisfy the following requirements: * It needs to use the reactive web stack (Spring WebFlux) and Spring HATEOAS to create links in hypermedia-based responses. * The application infrastructure does not guard against clients submitting (X-)Forwarded… headers.