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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

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

No history.

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

netapp

active_iq_unified_manager
hci_bootstrap_os
hci_compute_node
solidfire_\&_hci_management_node

gnu

gnutls

redhat

enterprise_linux

CWE

CWE-476

NULL Pointer Dereference

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