CVE-2021-4209

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-4209
A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

6.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://access.redhat.com/security/cve/CVE-2021-4209 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2044156 Issue Tracking Third Party Advisory
https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 Patch Third Party Advisory
https://gitlab.com/gnutls/gnutls/-/issues/1306 Third Party Advisory
https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220915-0005/ Third Party Advisory
https://access.redhat.com/security/cve/CVE-2021-4209 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2044156 Issue Tracking Third Party Advisory
https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 Patch Third Party Advisory
https://gitlab.com/gnutls/gnutls/-/issues/1306 Third Party Advisory
https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220915-0005/ Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*

Configuration 2 (hide)

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

Configuration 3 (hide)

OR cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND
cpe:2.3:a:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*
History

21 Nov 2024, 06:37

Type Values Removed Values Added
References () https://access.redhat.com/security/cve/CVE-2021-4209 - Third Party Advisory () https://access.redhat.com/security/cve/CVE-2021-4209 - Third Party Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=2044156 - Issue Tracking, Third Party Advisory () https://bugzilla.redhat.com/show_bug.cgi?id=2044156 - Issue Tracking, Third Party Advisory
References () https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 - Patch, Third Party Advisory () https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 - Patch, Third Party Advisory
References () https://gitlab.com/gnutls/gnutls/-/issues/1306 - Third Party Advisory () https://gitlab.com/gnutls/gnutls/-/issues/1306 - Third Party Advisory
References () https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 - Third Party Advisory () https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 - Third Party Advisory
References () https://security.netapp.com/advisory/ntap-20220915-0005/ - Third Party Advisory () https://security.netapp.com/advisory/ntap-20220915-0005/ - Third Party Advisory

27 Oct 2022, 16:57

Type Values Removed Values Added
References (CONFIRM) https://security.netapp.com/advisory/ntap-20220915-0005/ - (CONFIRM) https://security.netapp.com/advisory/ntap-20220915-0005/ - Third Party Advisory
CPE cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:a:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:*

15 Sep 2022, 18:15

Type Values Removed Values Added
References
  • (CONFIRM) https://security.netapp.com/advisory/ntap-20220915-0005/ -
References (MISC) https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 - (MISC) https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 - Patch, Third Party Advisory
References (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2044156 - (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=2044156 - Issue Tracking, Third Party Advisory
References (MISC) https://access.redhat.com/security/cve/CVE-2021-4209 - (MISC) https://access.redhat.com/security/cve/CVE-2021-4209 - Third Party Advisory
References (MISC) https://gitlab.com/gnutls/gnutls/-/issues/1306 - (MISC) https://gitlab.com/gnutls/gnutls/-/issues/1306 - Third Party Advisory
References (MISC) https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 - (MISC) https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 - Third Party Advisory
CWE CWE-476
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 6.5
CPE cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*

24 Aug 2022, 16:24

Type Values Removed Values Added
New CVE
Information

Published : 2022-08-24 16:15

Updated : 2024-11-21 06:37

NVD link : CVE-2021-4209

Mitre link : CVE-2021-4209

CVE.ORG link : CVE-2021-4209

JSON object : View

Products Affected

redhat

  • enterprise_linux

netapp

  • solidfire_\&_hci_management_node
  • hci_bootstrap_os
  • hci_compute_node
  • active_iq_unified_manager

gnu

  • gnutls
CWE
CWE-476

NULL Pointer Dereference