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FreeBSD 10.3 Jail SHM Issue

Posted by deepcore on August 17, 2017 – 3:28 am

FreeBSD jail incompletely protects the access to the IPC primitives. The ‘allow.sysvipc’ setting only affects IPC queues, leaving other IPC objects unprotected, making them reachable system-wide independently of the system configuration. Versions 7.0 through 10.3 are affected. Proof of concept included.


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