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Apple iOS / macOS - NSKeyedArchiver Memory Corruption Due to Lack of Bounds Checking in CAMediaTimin
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Source: https://bugs.chromium.org/p/project-zero/issues/detail?id=1175 CAMediaTimingFunctionBuiltin is a class in QuartzCore. Its initWithCoder: method reads an Int "index" then passes that to builtin_function mov ebx, edi <-- controlled unsigned int mov r14d, ebx lea r15, __ZL9functions_0 ; functions mov rax, [r15+r14*8] if rax is non-null it's returned as an objective-c object pointer and the objective-c retain selector is sent to it. Serialized poc in attached file with an index of 12345678. tested on MacOS 10.12.3 (16D32) Proof of Concept: https://github.com/offensive-security/exploit-database-bin-sploits/raw/master/sploits/42052.zip # 0day.today [2024-09-28] #