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Fix potential security issue with building redirection target uri

This commit is contained in:
Riley Apeldoorn 2022-07-21 14:36:30 +02:00
parent 8f4b9944e7
commit 06bf4d9afb
1 changed files with 12 additions and 2 deletions
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14
src/main.rs
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@ -208,8 +208,18 @@ impl Effect {
match self {
Effect::Proxy { port, .. } => {
let host = "0.0.0.0"; // Support for custom hosts added later
let path = req.uri().path_and_query().map(|x| x.as_str()).unwrap_or("");
let target = format!("http://{host}:{port}{path}");
let path = req
.uri()
.path_and_query()
.and_then(|x| {
// Reject all requests where the path doesn't start with a `/`,
// and strip the first `/` off all paths so we can ensure that
// the path is actually separated from the host and port.
x.as_str().strip_prefix('/')
})
.unwrap_or("");
let target = format!("http://{host}:{port}/{path}");
let uri = target.parse().unwrap();
*req.uri_mut() = uri;