CVE-2022-21499
"KGDB and KDB Unrestricted Kernel Memory Access"
Description
KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and 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 :
June 9, 2022, 9:15 p.m.
Last Modified :
Nov. 21, 2024, 6:44 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the affected kernel and related packages.
- Reboot the system to apply the update.
Public PoC/Exploit Available at Github
CVE-2022-21499 has a 3 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-2022-21499.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html | Third Party Advisory VDB Entry |
| https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066 | Mailing List Patch Vendor Advisory |
| https://www.debian.org/security/2022/dsa-5161 | Third Party Advisory |
| http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html | Third Party Advisory VDB Entry |
| https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066 | Mailing List Patch Vendor Advisory |
| https://www.debian.org/security/2022/dsa-5161 | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-21499 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-2022-21499
weaknesses.
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).
Map Vulnerabilities into Different Layers of the Container Image
Python
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-2022-21499 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-21499 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.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html Added Reference https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066 Added Reference https://www.debian.org/security/2022/dsa-5161 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Sep. 28, 2022
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html No Types Assigned http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
Sep. 08, 2022
Action Type Old Value New Value Changed Description KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.5 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H). KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H). Removed CVSS V3.1 Oracle AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H Added CVSS V3.1 Oracle AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Removed CVSS V3.1 Reason UI-User Interaction not identified -
CVE Modified by [email protected]
Aug. 30, 2022
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html [No Types Assigned] -
Initial Analysis by [email protected]
Jun. 17, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066 No Types Assigned https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066 Mailing List, Patch, Vendor Advisory Changed Reference Type https://www.debian.org/security/2022/dsa-5161 No Types Assigned https://www.debian.org/security/2022/dsa-5161 Third Party Advisory Added CWE NIST CWE-787 Added CPE Configuration OR *cpe:2.3:o:oracle:linux:6:-:*:*:*:*:*:* *cpe:2.3:o:oracle:linux:7:-:*:*:*:*:*:* *cpe:2.3:o:oracle:linux:8:-:*:*:*:*:*:* Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 13, 2022
Action Type Old Value New Value Added Reference https://www.debian.org/security/2022/dsa-5161 [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 6.7
Base CVSS Score: 4.6
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.00%
score
0.35481
percentile