Summary

Security Advisory ID : BSA-2017-356

Component : Heap Stack

Revision : 2.0: Interim

A flaw was found in the way memory was being allocated on the stack for user space binaries. If heap (or different memory region) and stack memory regions were adjacent to each other, an attacker could use this flaw to jump over the stack guard gap, cause controlled memory corruption on process stack or the adjacent memory region, and thus increase their privileges on the system. This is a kernel-side mitigation which increases the stack guard gap size from one page to 1 MiB to make successful exploitation of this issue more difficult.

Brocade is investigating its product lines to determine which products may be affected by this vulnerability and the impact on each affected product.

Brocade Fabric OS, Brocade NetIron OS, Brocade ServerIorn ADX, and Brocade Workflow Composer are confirmed not affected by this vulnerability.

There are no workarounds that address this vulnerability.

Revision History