The system must implement non-executable program stacks.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-11999	GEN003540	SV-39504r1_rule	ECSC-1	Medium

Description
A common type of exploit is the stack buffer overflow. An application receives, from an attacker, more data than it is prepared for and stores this information on its stack, writing beyond the space reserved for it. This can be designed to cause execution of the data written on the stack. One mechanism to mitigate this vulnerability is for the system to not allow the execution of instructions in sections of memory identified as part of the stack

Description

A common type of exploit is the stack buffer overflow. An application receives, from an attacker, more data than it is prepared for and stores this information on its stack, writing beyond the space reserved for it. This can be designed to cause execution of the data written on the stack. One mechanism to mitigate this vulnerability is for the system to not allow the execution of instructions in sections of memory identified as part of the stack

STIG	Date
Draft AIX Security Technical Implementation Guide	2011-08-17

Details

Check Text ( C-7963r2_chk )
Determine if the system implements non-executable program stacks. If the system does not implement non-executable program stacks, this is a finding.

Fix Text (F-11259r2_fix)
Enable non-executable program stacks on the system.