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A remote code execution vulnerability was found in Shim. The Shim boot support trusts attacker-controlled values when parsing an HTTP response. This flaw allows an attacker to craft a specific malicious HTTP request, leading to a completely controlled out-of-bounds write primitive and complete system compromise. This flaw is only exploitable during the early boot phase, an attacker needs to perfor ...

A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.

An out-of-bounds read flaw was found in Shim due to the lack of proper boundary verification during the load of a PE binary. This flaw allows an attacker to load a crafted PE binary, triggering the issue and crashing Shim, resulting in a denial of service.

An out-of-bounds read flaw was found in Shim when it tried to validate the SBAT information. This issue may expose sensitive data during the system's boot phase.

A flaw was found in the MZ binary format in Shim. An out-of-bounds read may occur, leading to a crash or possible exposure of sensitive data during the system's boot phase.

A correctness issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14, Safari 17, iOS 17 and iPadOS 17. Processing web content may lead to arbitrary code execution.

The issue was addressed with improved memory handling. This issue is fixed in macOS Sonoma 14.2. Processing a file may lead to unexpected app termination or arbitrary code execution.

An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Ventura 13.6.4, macOS Sonoma 14.2. An app may be able to read arbitrary files.

The issue was addressed with improved checks. This issue is fixed in iOS 16.7.5 and iPadOS 16.7.5, watchOS 10.2, macOS Ventura 13.6.4, macOS Sonoma 14.2, macOS Monterey 12.7.3, iOS 17.2 and iPadOS 17.2. Processing a maliciously crafted image may result in disclosure of process memory.

An authentication issue was addressed with improved state management. This issue is fixed in macOS Ventura 13.6.4. A local attacker may be able to view the previous logged in user���s desktop from the fast user switching screen.


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