Enable Yama support
An XCCDF Rule
Description
This enables support for LSM module Yama, which extends DAC support with additional system-wide
security settings beyond regular Linux discretionary access controls. The module will limit the
use of the system call ptrace().
The configuration that was used to build kernel is available at /boot/config-*.
To check the configuration value for CONFIG_SECURITY_YAMA, run the following command:
grep CONFIG_SECURITY_YAMA /boot/config-*
For each kernel installed, a line with value "y" should be returned.
warning alert: Warning
There is no remediation for this besides re-compiling the kernel with the appropriate value for the config.
Rationale
Unrestricted usage of ptrace allows compromised binaries to run ptrace on another processes of the user.
- ID
- xccdf_org.ssgproject.content_rule_kernel_config_security_yama
- Severity
- Medium
- References
- Updated