CVE-2021-3543

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-3543
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.

6.7 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2 /10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References
Link Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1953022 Issue Tracking Third Party Advisory
https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/
https://bugzilla.redhat.com/show_bug.cgi?id=1953022 Issue Tracking Third Party Advisory
https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/
Configurations

Configuration 1 (hide)

cpe:2.3:a:nitro_enclaves_project:nitro_enclaves:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

Configuration 3 (hide)

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
History

21 Nov 2024, 06:21

Type Values Removed Values Added
References () https://bugzilla.redhat.com/show_bug.cgi?id=1953022 - Issue Tracking, Third Party Advisory () https://bugzilla.redhat.com/show_bug.cgi?id=1953022 - Issue Tracking, Third Party Advisory
References () https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/ - () https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs%40amazon.com/ -

03 Jun 2022, 14:43

Type Values Removed Values Added
References (MISC) https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs@amazon.com/ - (MISC) https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs@amazon.com/ - Patch, Vendor Advisory

01 Apr 2022, 23:15

Type Values Removed Values Added
References
  • {'url': 'https://lore.kernel.org/lkml/20210429165941.27020-1-andraprs@amazon.com/', 'name': 'https://lore.kernel.org/lkml/20210429165941.27020-1-andraprs@amazon.com/', 'tags': ['Exploit', 'Third Party Advisory'], 'refsource': 'MISC'}
  • (MISC) https://lore.kernel.org/lkml/20210429165941.27020-2-andraprs@amazon.com/ -

11 Jun 2021, 19:14

Type Values Removed Values Added
CPE cpe:2.3:a:nitro_enclaves_project:nitro_enclaves:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 7.2
v3 : 6.7
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1953022 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1953022 - Issue Tracking, Third Party Advisory
References (MISC) https://lore.kernel.org/lkml/20210429165941.27020-1-andraprs@amazon.com/ - (MISC) https://lore.kernel.org/lkml/20210429165941.27020-1-andraprs@amazon.com/ - Exploit, Third Party Advisory
CWE CWE-476
CWE-416

01 Jun 2021, 14:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-06-01 14:15

Updated : 2024-11-21 06:21

NVD link : CVE-2021-3543

Mitre link : CVE-2021-3543

CVE.ORG link : CVE-2021-3543

JSON object : View

Products Affected

redhat

  • enterprise_linux

fedoraproject

  • fedora

nitro_enclaves_project

  • nitro_enclaves
CWE
CWE-416

Use After Free

CWE-476

NULL Pointer Dereference