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GHSA-wvp2-9ppw-337j
No affected components available
Impact
Spring supports Matrix variables.
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.*"
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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