[Webkit-unassigned] [Bug 239616] New: -[ASCAgentProxy cancelCurrentRequest] is not available on customer installs

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239616

            Bug ID: 239616
           Summary: -[ASCAgentProxy cancelCurrentRequest] is not available
                    on customer installs
           Product: WebKit
           Version: Safari 15
          Hardware: Mac (Apple Silicon)
                OS: macOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: saagar at saagarjha.com

Created attachment 458080

  --> https://bugs.webkit.org/attachment.cgi?id=458080&action=review

A crash that illustrates this bug.

https://bugs.webkit.org/show_bug.cgi?id=237452 adds a call to -[ASCAgentProxy cancelCurrentRequest] in WebAuthenticatorCoordinatorProxy's destructor and appears to have shipped with the Safari 15.5 bundled with macOS 12.4 Beta (21F5058e). However, this method does not exist (or is not exposed), at least in the non-internal build. This causes Safari to crash when navigation occurs after a WebAuthn operation, such as my employer's VPN login flow.

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