CVE-2022-21505
Linux Kernel IMA Lockdown Evasion through Kexec
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).
INFO
Published Date :
Dec. 24, 2024, 7:15 p.m.
Last Modified :
Dec. 27, 2024, 5:15 p.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
5.9
Exploitability Score :
0.8
Public PoC/Exploit Available at Github
CVE-2022-21505 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-21505.
| URL | Resource |
|---|---|
| https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5b | |
| https://linux.oracle.com/cve/CVE-2022-21505.html |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
test 反向辣鸡数据投放 CVE-2022-23305 工具 利用 教程 Exploit POC
cve-2020-
Disabling kernel lockdown on Ubuntu without physical access
linux-kernel exploit security secure-boot lockdown
Shell C Makefile Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-21505 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-21505 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Dec. 27, 2024
Action Type Old Value New Value Added CWE CWE-346 -
New CVE Received by [email protected]
Dec. 24, 2024
Action Type Old Value New Value Added 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). Added CVSS V3.1 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Added Reference https://git.kernel.org/linus/543ce63b664e2c2f9533d089a4664b559c3e6b5b Added Reference https://linux.oracle.com/cve/CVE-2022-21505.html
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-21505 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-21505
weaknesses.