CVE-2021-3543

Common vulnerabilities & exposures (CVE)

CVE database CVE database blogpost Release & EoL database

Published at: - 01-06-2021 04:15

Last modified: - 03-06-2022 04:43

Total changes: - 3

Description

A flaw null pointer dereference in the Nitro Enclaves kernel driver was found in the way that Enclaves VMs forces closures on the enclave file descriptor. A local user of a host machine could use this flaw to crash the system or escalate their privileges on the system.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Low

Attack complexity

Local

Attack vector

High

Availability

High

Confidentiality

High

Integrity

High

Privileges required

Unchanged

Scope

None

User interaction

6.7

Base score

0.8

5.9

Exploitability score

Impact score

Verification logic

vendor=nitro_enclaves_project AND product=nitro_enclaves AND versionEndExcluding=5.10.0

vendor=Red Hat Enterprise Linux AND product=enterprise_linux AND version=8.0

vendor=fedoraproject AND product=fedora AND version=34

Reference

Keywords

CVE-2021-3543

Common vulnerabilities & exposures (CVE)

Description

Common Vulnerability Scoring System (CVSS)

Verification logic

Reference

NVD

CVE-2021-3543

CVE

Common vulnerabilities & exposures

CVSS

Common vulnerability scoring system

Security

Vulnerabilities

Exposures