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GEN003540 - The system must implement non-executable program stacks.

Information

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.

Solution

This action applies to the global zone only. Determine the type of zone that you are currently securing.

# zonename

If the command output is 'global', this action applies.

Edit /etc/system and set the noexec_user_stack parameter to 1. Restart the system for the setting to take effect.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SOL_10_x86_V2R4_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-227791r603266_rule, STIG-ID|GEN003540, STIG-Legacy|SV-27412, STIG-Legacy|V-11999, Vuln-ID|V-227791

Plugin: Unix

Control ID: 00859cf9a210a48e03f9863e2d28c106f18a7529968829336cbf5e12fc53854f