alpire commented on a change in pull request #176: CoyoteAdapter: fix
out-of-bounds read in checkNormalize
URL: https://github.com/apache/tomcat/pull/176#discussion_r299498714
##########
File path: java/org/apache/catalina/connector/CoyoteAdapter.java
##########
@@ -1271,6 +1276,11 @@ public static boolean checkNormalize(MessageBytes
uriMB) {
}
}
+ // The URL must start with '/'
+ if (c[start] != '/') {
+ return false;
+ }
+
// Check for ending with "/." or "/.."
Review comment:
Sorry for the confusion. What I posted was the entire query, i.e. you can
reproduce the issue with:
```
$ echo -ne "\x20\x2e\x2e\x20\x30\x20\x0a" | nc localhost 8081
HTTP/1.1 500
Date: Tue, 02 Jul 2019 13:55:20 GMT
Connection: close
```
Looking more into it, you can also be reproduced with a normal looking HTTP
query:
```
$ echo -ne "GET .. HTTP/1.1\r\n\r\n" | nc localhost 8081
```
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