[Webkit-unassigned] [Bug 283307] New: CFNetwork URLRequest::initialize(CFDictionaryRef webKitSecureCodingDictionary) crashes when HTTP headers come in String -> String form

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=283307

            Bug ID: 283307
           Summary: CFNetwork URLRequest::initialize(CFDictionaryRef
                    webKitSecureCodingDictionary) crashes when HTTP
                    headers come in String -> String form
           Product: WebKit
           Version: Other
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: pvarangot at apple.com

This is because it's iterating them like this:

[headerFields enumerateKeysAndObjectsUsingBlock:^(NSString *name, NSArray<NSString *> *values, BOOL *stop) {
                                        for (NSString * value in values) {

and that will call countByEnumeratingWithState:objects:count: on a String (it's an array method) and crash with invalid selector.

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