CVE-2021-43557
published 2021-11-22CVE-2021-43557: The uri-block plugin in Apache APISIX before 2.10.2 uses $request_uri without verification. The $request_uri is the full original request URI without…
high7.5CVSS 3.1
AVNACLPRNUINSUCHINAN
The uri-block plugin in Apache APISIX before 2.10.2 uses $request_uri without verification. The $request_uri is the full original request URI without normalization. This makes it possible to construct a URI to bypass the block list on some occasions. For instance, when the block list contains "^/internal/", a URI like `//internal/` can be used to bypass it. Some other plugins also have the same issue. And it may affect the developer's custom plugin.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apache | apisix | < 2.10.2 | 2.10.2 |
| apache_software_foundation | apache_apisix | >= 1.5 < Apache APISIX 1.5* | Apache APISIX 1.5* |