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CVE-2017-5669: Potential MMAP protection mechanism bypass. (Bug #282220)

Product

SteelHead (Appliance)

Fixed in Version:

steelhead 9.7.0, steelhead 9.6.2

Last Modified:

2018-06-25

Summary

DETAILS:

The do_shmat function in ipc/shm.c in the Linux kernel through 4.9.12 does not restrict the address calculated by a certain rounding operation, which allows local users to map page zero, and consequently bypass a protection mechanism that exists for the MMAP system call, by making crafted shmget and shmat system calls in a privileged context.

FIX:

Applied a patch to correct this vulnerability.

RECOMMENDATION:

Upgrade to a software version with the fix.