Vulnerability CVE-2022-21499

Vulnerability Name:

CVE-2022-21499 (CCN-227207)

Assigned:

2021-11-15

Published:

2022-05-24

Updated:

2022-09-28

Summary:

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).

CVSS v3 Severity:

6.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

6.7 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): High User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

4.6 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): Partial

6.5 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:M/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Multiple_Instances
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-787

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2022-21499

Source: MISC
Type: Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html

Source: XF
Type: UNKNOWN
linux-kernel-cve202221499-sec-bypass(227207)

Source: MISC
Type: Mailing List, Patch, Vendor Advisory
https://git.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066

Source: CCN
Type: Linux Kernel GIT Repository
lockdown: also lock down previous kgdb use

Source: CCN
Type: oss-sec Mailing List, Tue, 24 May 2022 17:10:40 +0000
CVE-2022-21499: trivial lockdown break

Source: DEBIAN
Type: Third Party Advisory
DSA-5161

Vulnerable Configuration:

Configuration 1:

cpe:/o:oracle:linux:6:-:*:*:*:*:*:*

OR cpe:/o:oracle:linux:7:-:*:*:*:*:*:*

OR cpe:/o:oracle:linux:8:-:*:*:*:*:*:*

Configuration 2:

cpe:/o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Configuration RedHat 1:

cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

Configuration RedHat 2:

cpe:/a:redhat:enterprise_linux:8::nfv:*:*:*:*:*

Configuration RedHat 3:

cpe:/a:redhat:enterprise_linux:8::realtime:*:*:*:*:*

Configuration RedHat 4:

cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*

Configuration RedHat 5:

cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*

Configuration RedHat 6:

cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*

Configuration RedHat 7:

cpe:/a:redhat:enterprise_linux:9:*:*:*:*:*:*:*

Configuration RedHat 8:

cpe:/a:redhat:enterprise_linux:9::nfv:*:*:*:*:*

Configuration RedHat 9:

cpe:/a:redhat:enterprise_linux:9::realtime:*:*:*:*:*

Configuration RedHat 10:

cpe:/a:redhat:enterprise_linux:9::appstream:*:*:*:*:*

Configuration RedHat 11:

cpe:/a:redhat:enterprise_linux:9::crb:*:*:*:*:*

Configuration RedHat 12:

cpe:/o:redhat:enterprise_linux:9:*:*:*:*:*:*:*

Configuration RedHat 13:

cpe:/o:redhat:enterprise_linux:9::baseos:*:*:*:*:*

Configuration CCN 1:

cpe:/o:linux:linux_kernel:-:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:8029	P	kernel-docs-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-20
oval:org.opensuse.security:def:7539	P	kernel-64kb-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:8090	P	reiserfs-kmp-default-5.14.21-150500.53.2 on GA media (Moderate)	2023-06-12
oval:com.redhat.rhsa:def:20227933	P	RHSA-2022:7933: kernel-rt security and bug fix update (Moderate)	2022-11-15
oval:com.redhat.rhsa:def:20228267	P	RHSA-2022:8267: kernel security, bug fix, and enhancement update (Moderate)	2022-11-15
oval:com.redhat.rhsa:def:20227683	P	RHSA-2022:7683: kernel security, bug fix, and enhancement update (Moderate)	2022-11-08
oval:com.redhat.rhsa:def:20227444	P	RHSA-2022:7444: kernel-rt security and bug fix update (Moderate)	2022-11-08
oval:org.opensuse.security:def:4737	P	Security update for the Linux Kernel (Important)	2022-08-02
oval:org.opensuse.security:def:95383	P	Security update for the Linux Kernel (Important)	2022-08-01
oval:org.opensuse.security:def:3753	P	Security update for the Linux Kernel (Important)	2022-08-01
oval:org.opensuse.security:def:627	P	Security update for the Linux Kernel (Important)	2022-08-01
oval:org.opensuse.security:def:118222	P	Security update for the Linux Kernel (Live Patch 21 for SLE 15 SP2) (Important)	2022-07-21
oval:org.opensuse.security:def:94263	P	(Important)	2022-07-21
oval:org.opensuse.security:def:3794	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:3643	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:4653	P	Security update for the Linux Kernel (Live Patch 22 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:95350	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:118219	P	Security update for the Linux Kernel (Live Patch 20 for SLE 15 SP2) (Important)	2022-07-21
oval:org.opensuse.security:def:93630	P	(Important)	2022-07-21
oval:org.opensuse.security:def:3726	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:4657	P	Security update for the Linux Kernel (Live Patch 28 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:4650	P	Security update for the Linux Kernel (Live Patch 20 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:95416	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:94472	P	(Important)	2022-07-21
oval:org.opensuse.security:def:118214	P	Security update for the Linux Kernel (Live Patch 25 for SLE 15 SP2) (Important)	2022-07-21
oval:org.opensuse.security:def:93159	P	(Important)	2022-07-21
oval:org.opensuse.security:def:3705	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:4654	P	Security update for the Linux Kernel (Live Patch 23 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:589	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:95355	P	Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP4) (Important)	2022-07-21
oval:org.opensuse.security:def:118220	P	Security update for the Linux Kernel (Live Patch 24 for SLE 15 SP2) (Important)	2022-07-21
oval:org.opensuse.security:def:93837	P	(Important)	2022-07-21
oval:org.opensuse.security:def:4658	P	Security update for the Linux Kernel (Live Patch 31 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:4651	P	Security update for the Linux Kernel (Live Patch 21 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:95427	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:95273	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:118215	P	Security update for the Linux Kernel (Live Patch 26 for SLE 15 SP2) (Important)	2022-07-21
oval:org.opensuse.security:def:93319	P	(Important)	2022-07-21
oval:org.opensuse.security:def:3720	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:4655	P	Security update for the Linux Kernel (Live Patch 26 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:125381	P	Security update for the Linux Kernel (Live Patch 24 for SLE 12 SP4) (Important)	2022-07-21
oval:org.opensuse.security:def:95356	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:118221	P	Security update for the Linux Kernel (Live Patch 16 for SLE 15 SP2) (Important)	2022-07-21
oval:org.opensuse.security:def:94051	P	(Important)	2022-07-21
oval:org.opensuse.security:def:3783	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:4652	P	Security update for the Linux Kernel (Live Patch 29 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:95335	P	Security update for the Linux Kernel (Important)	2022-07-21
oval:org.opensuse.security:def:118217	P	Security update for the Linux Kernel (Live Patch 18 for SLE 15 SP2) (Important)	2022-07-21
oval:org.opensuse.security:def:93477	P	(Important)	2022-07-21
oval:org.opensuse.security:def:3725	P	Security update for the Linux Kernel (Live Patch 0 for SLE 15 SP4) (Important)	2022-07-21
oval:org.opensuse.security:def:4656	P	Security update for the Linux Kernel (Live Patch 27 for SLE 12 SP5) (Important)	2022-07-21
oval:org.opensuse.security:def:125382	P	Security update for the Linux Kernel (Live Patch 26 for SLE 12 SP4) (Important)	2022-07-21
oval:org.opensuse.security:def:118213	P	Security update for the Linux Kernel (Live Patch 23 for SLE 15 SP2) (Important)	2022-07-20
oval:org.opensuse.security:def:118210	P	Security update for the Linux Kernel (Live Patch 17 for SLE 15 SP2) (Important)	2022-07-20
oval:org.opensuse.security:def:125380	P	Security update for the Linux Kernel (Live Patch 22 for SLE 12 SP4) (Important)	2022-07-20
oval:org.opensuse.security:def:118211	P	Security update for the Linux Kernel (Live Patch 19 for SLE 15 SP2) (Important)	2022-07-20
oval:org.opensuse.security:def:118212	P	Security update for the Linux Kernel (Live Patch 22 for SLE 15 SP2) (Important)	2022-07-20
oval:org.opensuse.security:def:125378	P	Security update for the Linux Kernel (Live Patch 23 for SLE 12 SP4) (Important)	2022-07-19
oval:org.opensuse.security:def:4644	P	Security update for the Linux Kernel (Live Patch 24 for SLE 12 SP5) (Important)	2022-07-19
oval:org.opensuse.security:def:4645	P	Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP5) (Important)	2022-07-19
oval:org.opensuse.security:def:125377	P	Security update for the Linux Kernel (Live Patch 25 for SLE 12 SP4) (Important)	2022-07-19
oval:org.opensuse.security:def:4647	P	Security update for the Linux Kernel (Live Patch 30 for SLE 12 SP5) (Important)	2022-07-19
oval:org.opensuse.security:def:125755	P	Security update for the Linux Kernel (Important)	2022-07-14
oval:org.opensuse.security:def:125116	P	Security update for the Linux Kernel (Important)	2022-07-14
oval:org.opensuse.security:def:126919	P	Security update for the Linux Kernel (Important)	2022-07-14
oval:org.opensuse.security:def:125375	P	Security update for the Linux Kernel (Important)	2022-07-14
oval:org.opensuse.security:def:127316	P	Security update for the Linux Kernel (Important)	2022-07-14
oval:org.opensuse.security:def:5277	P	Security update for the Linux Kernel (Important)	2022-06-20
oval:org.opensuse.security:def:4628	P	Security update for the Linux Kernel (Important)	2022-06-20
oval:org.opensuse.security:def:6075	P	Security update for the Linux Kernel (Important)	2022-06-20
oval:org.opensuse.security:def:4296	P	Security update for the Linux Kernel (Important)	2022-06-20
oval:org.opensuse.security:def:6339	P	Security update for the Linux Kernel (Important)	2022-06-20
oval:org.opensuse.security:def:531	P	Security update for the Linux Kernel (Important)	2022-06-17
oval:org.opensuse.security:def:6070	P	Security update for the Linux Kernel (Important)	2022-06-14

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