Sign kernel modules with SHA-512
An XCCDF Rule
Description
This configures the kernel to build and sign modules using SHA512 as the hash function.
The configuration that was used to build kernel is available at /boot/config-*.
To check the configuration value for CONFIG_MODULE_SIG_SHA512, run the following command:
grep CONFIG_MODULE_SIG_SHA512 /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
Use of strong hash function is important to secure the module against counterfeit signatures.
- ID
- xccdf_org.ssgproject.content_rule_kernel_config_module_sig_sha512
- Severity
- Medium
- References
- Updated