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fix: insecure iframe messaging #297

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fix: insecure iframe messaging #297

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3255484
Fix insecure iframe messaging
chaitanyapotti Sep 1, 2021
ededac8
use origin parameter instead of uri to account for path, query, hash etc
chaitanyapotti Sep 4, 2021
5b07385
add origin as ctor parameter
chaitanyapotti Sep 6, 2021
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5 changes: 3 additions & 2 deletions src/transports/PostMessageIframeTransport.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,8 @@ class PostMessageIframeTransport extends Transport {
});
}
private messageHandler = (ev: MessageEvent) => {
this.transportRequestManager.resolveResponse(JSON.stringify(ev.data));
if (ev.origin === this.uri)
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if (ev.origin === this.uri)
if (ev.origin === this.origin)

this.transportRequestManager.resolveResponse(JSON.stringify(ev.data));
}
public connect(): Promise<any> {
const urlRegex = /^(http|https):\/\/.*$/;
Expand All @@ -46,7 +47,7 @@ class PostMessageIframeTransport extends Transport {
const prom = this.transportRequestManager.addRequest(data, null);
const notifications = getNotifications(data);
if (this.frame) {
this.frame.postMessage((data as IJSONRPCData).request, "*");
this.frame.postMessage((data as IJSONRPCData).request, this.uri);
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this.frame.postMessage((data as IJSONRPCData).request, this.uri);
this.frame.postMessage((data as IJSONRPCData).request, this.origin);

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the origin can easily be derived as new URL(this.uri).origin
We don't need another parameter from ctor

this.transportRequestManager.settlePendingRequest(notifications);
}
return prom;
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3 changes: 2 additions & 1 deletion src/transports/PostMessageWindowTransport.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,8 @@ class PostMessageTransport extends Transport {
}

private messageHandler = (ev: MessageEvent) => {
this.transportRequestManager.resolveResponse(JSON.stringify(ev.data));
if (ev.origin === this.uri)
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@zcstarr zcstarr Sep 3, 2021 •
edited
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Suggested change
if (ev.origin === this.uri)
if (ev.origin === this.origin || ev.orgin === "*")

this.transportRequestManager.resolveResponse(JSON.stringify(ev.data));
}

public connect(): Promise<any> {
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