Vulnerability Details : CVE-2021-33200

kernel/bpf/verifier.c in the Linux kernel through 5.12.7 enforces incorrect limits for pointer arithmetic operations, aka CID-bb01a1bba579. This can be abused to perform out-of-bounds reads and writes in kernel memory, leading to local privilege escalation to root. In particular, there is a corner case where the off reg causes a masking direction change, which then results in an incorrect final aux->alu_limit.
Publish Date : 2021-05-27 Last Update Date : 2023-02-24

Collapse All Expand All Select Select&Copy	Scroll To Vendor Statements(0) Additional Vendor Data(0) OVAL Definitions(0) Vulnerable Products(0) # Of Vulns By Products References(0) Metasploit Modules(0)	Comments View User Comments Add Comment	External Links Secunia Advisories XForce Advisories Vulnerability Details at NVD Vulnerability Details at Mitre Nessus Plugins Linux Kernel Git Repository First CVSS Guide
Search Twitter Search YouTube Search Google

- CVSS Scores & Vulnerability Types

CVSS Score	7.2
Confidentiality Impact	Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact	Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact	Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity	Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication	Not required (Authentication is not required to exploit the vulnerability.)
Gained Access	None
Vulnerability Type(s)
CWE ID	787

- Related OVAL Definitions

Title	Definition Id	Class	Family
RHSA-2021:4140: kernel-rt security and bug fix update (Moderate)	oval:com.redhat.rhsa:def:20214140		unix
RHSA-2021:4356: kernel security, bug fix, and enhancement update (Moderate)	oval:com.redhat.rhsa:def:20214356		unix

OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2021-33200

#	Product Type	Vendor	Product	Version	Update	Edition	Language
1	OS	Fedoraproject	Fedora	33	*	*	*	Version Details Vulnerabilities
2	OS	Fedoraproject	Fedora	34	*	*	*	Version Details Vulnerabilities
3	OS	Linux	Linux Kernel	*	*	*	*	Version Details Vulnerabilities
4	Application	Netapp	Cloud Backup	-	*	*	*	Version Details Vulnerabilities
5	Application	Netapp	Solidfire Baseboard Management Controller	-	*	*	*	Version Details Vulnerabilities
6	Application	Netapp	Solidfire \& Hci Management Node	-	*	*	*	Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor	Product	Vulnerable Versions
Fedoraproject	Fedora	2
Linux	Linux Kernel	1
Netapp	Cloud Backup	1
Netapp	Solidfire Baseboard Management Controller	1
Netapp	Solidfire \& Hci Management Node	1

- References For CVE-2021-33200

https://lists.fedoraproject.org/archives/list/[email protected]/message/7LR3OKKPHIBGOMHN476CMLW2T7UG53QX/
FEDORA FEDORA-2021-646098b5b8

https://lists.fedoraproject.org/archives/list/[email protected]/message/JJCABL43FT3FKRX5DBPZG25FNKR6CEK4/
FEDORA FEDORA-2021-0b35886add

https://www.openwall.com/lists/oss-security/2021/05/27/1

https://security.netapp.com/advisory/ntap-20210706-0004/ CONFIRM

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *
Vulnerability is valid if product versions listed below are used 0
Netapp Solidfire Baseboard Management Controller * * * Netapp Solidfire \& Hci Management Node * * * Netapp Cloud Backup * * * Fedoraproject Fedora 34 * * * Fedoraproject Fedora 33 * * * Linux Linux Kernel * * * *	Netapp H300e * * * Netapp H300e Firmware * * * Netapp H300s * * * Netapp H300s Firmware * * * Netapp H410s * * * Netapp H410s Firmware * * * Netapp H500e * * * Netapp H500e Firmware * * * Netapp H500s * * * Netapp H500s Firmware * * * Netapp H700e * * * Netapp H700e Firmware * * * Netapp H700s * * * Netapp H700s Firmware * * *

- Metasploit Modules Related To CVE-2021-33200

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)