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The issue first started this week when Apple released the iOS 16.5.1 (a), iPadOS 16.5.1 (a), and macOS 13.4.1 (a) RSRs. The updates were initially meant to address an issue dubbed CVE-2023-37450, which “may have been actively exploited.” Unfortunately, the updates caused another issue for devices. According to reports, the issue started through the change in the Safari user agent, which now includes an (a). This reportedly caused some websites not to recognize Safari. Apple promised then pulled the (a) RSRs and promised to deliver the (b) updates to end the issue. However, instead of the promised (b) fix, the Cupertino company is releasing the (c) updates today, including the macOS Ventura Security Response 13.4.1 (c).
“Rapid Security Responses iOS 16.5.1 (c) and iPadOS 16.5.1 (c) include the security content of Rapid Security Responses iOS 16.5.1 (a) and iPadOS 16.5.1 (a) and fix an issue that prevents some websites from displaying properly,” Apple notes in its support page today.
Prior to the release of the (c) RSR updates, Apple suggested a workaround for affected users by rolling back the (a) updates. Nonetheless, this is no longer needed. Rapid Security Response updates are automatically applied by default, which means users should receive the latest fix without doing anything, though they might still be prompted to restart their devices.