Universal Links (part of the ios attacks)

[Cyberizm]

Vulnerable Code:

- (BOOL)application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray * _Nullable))restorationHandler {
NSURL *url = userActivity.webpageURL;
// Process the URL and take appropriate action
// Vulnerable to manipulation and spoofing
return YES;
}

Description: This vulnerable Objective-C code handles Universal Links in the continueUserActivity method of the application delegate. However, it does not properly validate the incoming URL or verify its authenticity, making it susceptible to URL manipulation and spoofing attacks.

Patched Code:

- (BOOL)application:(UIApplication *)application continueUserActivity:(NSUserActivity *)userActivity restorationHandler:(void (^)(NSArray * _Nullable))restorationHandler {
if ([userActivity.activityType isEqualToString:NSUserActivityTypeBrowsingWeb]) {
NSURL *url = userActivity.webpageURL;
// Verify the authenticity of the URL and process it securely
if ([self isValidUniversalLink:url]) {
// Take appropriate action
return YES;
} else {
NSLog(@"Invalid or unauthorized Universal Link: %@", url);
return NO;
}
}
return NO;
}

- (BOOL)isValidUniversalLink:(NSURL *)url {
// Implement logic to validate the authenticity of the Universal Link
// Return YES if the link is valid and authorized, otherwise return NO
// Example: Check if the URL belongs to a trusted domain
// Additional checks like cryptographic validation can be performed here
return [url.host isEqualToString:@"www.hoopchat.com"];
}

Description: The patched Objective-C code validates the incoming Universal Link in the continueUserActivity method by checking its activity type and then verifying its authenticity using the isValidUniversalLink method. This method implements custom validation logic to ensure that the link belongs to a trusted domain or meets other security criteria. If the link is valid and authorized, the code proceeds to take appropriate action; otherwise, it logs the invalid or unauthorized link and rejects it.

Swift:

Vulnerable Code:

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
guard userActivity.activityType == NSUserActivityTypeBrowsingWeb else {
return false
}
let url = userActivity.webpageURL
// Process the URL and take appropriate action
// Vulnerable to manipulation and spoofing
return true
}

Description: This vulnerable Swift code handles Universal Links in the continue(_:restorationHandler method of the application delegate. However, it does not properly validate the incoming URL or verify its authenticity, leaving it vulnerable to URL manipulation and spoofing attacks.

Patched Code:

func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
guard userActivity.activityType == NSUserActivityTypeBrowsingWeb else {
return false
}
guard let url = userActivity.webpageURL else {
return false
}
// Verify the authenticity of the URL and process it securely
if isValidUniversalLink(url) {
// Take appropriate action
return true
} else {
print("Invalid or unauthorized Universal Link: \(url)")
return false
}
}

func isValidUniversalLink(_ url: URL) -> Bool {
// Implement logic to validate the authenticity of the Universal Link
// Return true if the link is valid and authorized, otherwise return false
// Example: Check if the URL belongs to a trusted domain
// Additional checks like cryptographic validation can be performed here
return url.host == "www.hoopchat.com"
}

Description: The patched Swift code validates the incoming Universal Link in the continue(_:restorationHandler method by checking its activity type and then verifying its authenticity using the isValidUniversalLink function. This function implements custom validation logic to ensure that the link belongs to a trusted domain or meets other security criteria. If the link is valid and authorized, the code proceeds to take appropriate action; otherwise, it logs the invalid or unauthorized link and rejects it.



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[FancyCake]

I think its concatenated. Where's the other scripts? can you post more?

 

[QiLin]

It's complete actually, if you run it across other threads created by this team.