Paths contain matrix variables bypass decorators
### Impact Spring supports [Matrix variables](https://docs.spring.io/spring-framework/reference/web/webmvc/mvc-controller/ann-methods/matrix-variables.html). When Spring integration is used, Armeria calls Spring controllers via `TomcatService` or `JettyService` with the path that may contain matrix variables. In this situation, the Armeria decorators might not invoked because of the matrix variables. Let's see the following example: ``` // Spring controller @GetMapping("/important/resources") public String important() {...} // Armeria decorator ServerBuilder sb = ... sb.decoratorUnder("/important/", authService); ``` If an attacker sends a request with `/important;a=b/resources`, the request would bypass the authrorizer ### Patches - https://github.com/line/armeria-ghsa-wvp2-9ppw-337j/commit/9b0ec3e099cc05fbff11d7f1012a1dddb0000d0c ### Workarounds Users can add decorators using regex. `e.g. "regex:^/important.*"`
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-38493US | high7.5OT elevated | — | ||
Armeria is a microservice framework Spring supports Matrix variables. When Spring integration is used, Armeria calls Spring controllers via `TomcatService` or `JettyService` with t… | ||||
references
External citations — patches, advisories, analysis.
- https://docs.spring.io/spring-framework/reference/web/webmvc/mvc-controller/ann-methods/matrix-variables.htmlWEB
- https://github.com/line/armeriaPACKAGE
- https://github.com/line/armeria/commit/039db50bbfc88014ea8737fd1e1ddd6fd3fc4f07WEB
- https://github.com/line/armeria/commit/49e04ef231ad65750739529c7fa4ce946ff7588bWEB
- https://github.com/line/armeria/security/advisories/GHSA-wvp2-9ppw-337jWEB
- https://nvd.nist.gov/vuln/detail/CVE-2023-38493ADVISORY
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