VAR-200311-0057

Vulnerability from variot - Updated: 2025-04-03 22:11

Buffer overflow in the Mac OS X kernel 10.2.8 and earlier allows local users, and possibly remote attackers, to cause a denial of service (crash), access portions of memory, and possibly execute arbitrary code via a long command line argument (argv[]). A buffer overrun has been discovered in the MacOS X kernel when handling large argv values passed via the command-line. The precise details regarding this condition are currently unknown however the problem likely occurs due to insufficient bounds checking when handling user-supplied data. It has been confirmed that this condition can be exploited to cause a target kernel to crash. Mac OS X is an operating system used on Mac machines, based on the BSD system. By specifying extremely long command-line arguments, a local attacker could cause a Mac OS X kernel panic. The length of the total number of parameters that can trigger this condition is allowed within a small range. When this problem occurs, the operating system crashes immediately, not allowing the user to perform any operations. No logs are produced, nor are there any kernel panic messages. The system will automatically restart after a few minutes. This vulnerability can also be used to dump a small amount of kernel memory information to the attacker, but according to @stake's investigation, only the memory address will be returned to the user, and generally does not contain sensitive information

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