Description
In the linux kernel, if IMA appraisal is used with the "ima_appraise=log" boot param, lockdown can be defeated with kexec on any machine when Secure Boot is disabled or unavailable. IMA prevents setting "ima_appraise=log" from the boot param when Secure Boot is enabled, but this does not cover cases where lockdown is used without Secure Boot. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity, Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- oracle / linux7 – 7
- oracle / linux8 – 8
- oracle / linux9 – 9
- Oracle Corporation / Oracle LinuxOracle Linux: 7 – Oracle Linux: 7
- Oracle Corporation / Oracle LinuxOracle Linux: 8 – Oracle Linux: 8
- Oracle Corporation / Oracle LinuxOracle Linux: 9 – Oracle Linux: 9
Updated 20m ago · 8 sources