|Description||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.|
|References||MISC: https://lists.apache.org/thread/18jyd458ptocr31rnkjs71w4h366mv7h |
MLIST:[oss-security] 20211122 CVE-2021-43557: Apache APISIX: Path traversal in request_uri variable
MLIST:[oss-security] 20211122 Re: CVE-2021-43557: Apache APISIX: Path traversal in request_uri variable
MLIST:[oss-security] 20211123 Re: CVE-2021-43557: Apache APISIX: Path traversal in request_uri variable
|Votes||None (candidate not yet proposed)|
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