CVE Vulnerability

CVE-2021-34866

This vulnerability allows local attackers to escalate privileges on affected installations of Linux Kernel 5.14-rc3. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the handling of eBPF programs. The issue results from the lack of proper validation of user-supplied eBPF programs, which can result in a type confusion condition. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel. Was ZDI-CAN-14689.

7.2 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 10

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://www.zerodayinitiative.com/advisories/ZDI-21-1148/ Third Party Advisory VDB Entry
https://security.netapp.com/advisory/ntap-20220217-0008/ Third Party Advisory
Configurations

Configuration 1

cpe:2.3:o:linux:linux_kernel:5.14:rc3:*:*:*:*:*:*
Information

Published : 2022-01-25 04:15

Updated : 2022-03-29 04:35

NVD link : CVE-2021-34866

Mitre link : CVE-2021-34866

Products Affected

H700s Firmware

Netapp

CWE
CWE-843