Vulnerability Monitor

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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.

Published

2022-08-24T16:15:09.927

Last Modified

2024-11-21T06:37:09.190

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

Weaknesses

Type: Secondary
CWE-476
Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnu	gnutls	< 3.7.3	Yes
Operating System	redhat	enterprise_linux	8.0	Yes
Application	netapp	active_iq_unified_manager	-	Yes
Application	netapp	solidfire_\&_hci_management_node	-	Yes
Application	netapp	hci_bootstrap_os	-	Yes
Hardware	netapp	hci_compute_node	-	No

References

https://access.redhat.com/security/cve/CVE-2021-4209 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=2044156 Issue Tracking, Third Party Advisory ([email protected])
https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 Patch, Third Party Advisory ([email protected])
https://gitlab.com/gnutls/gnutls/-/issues/1306 Third Party Advisory ([email protected])
https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20220915-0005/ Third Party Advisory ([email protected])
https://access.redhat.com/security/cve/CVE-2021-4209 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=2044156 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gitlab.com/gnutls/gnutls/-/issues/1306 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20220915-0005/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)