A vulnerability has been reported in NTP, which can be exploited by malicious people to potentially compromise a user's system.
The vulnerability is caused due to a boundary error within the "cookedprint()" function in ntpq/ntpq.c. This can be exploited to cause a stack-based buffer overflow with two bytes via a specially crafted server response.
Successful exploitation may allow execution of arbitrary code, but requires that the user is tricked into querying a malicious time server with ntpq.
The vulnerability is reported in version 4.2.4p6. Other versions may also be affected.
Solution: Update to version 4.2.4p7.
Provided and/or discovered by: Apple Product Security
Original Advisory: https://support.ntp.org/bugs/show_bug.cgi?id=1144
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