CVE-2021-4209

CVSS V2 None CVSS V3 Medium 6.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-4209
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-08-24T16:15:09
  • Last Modified Date
  • 2022-10-27T16:57:33
Weakness Enumerations
CWE URL
CWE-476 http://cwe.mitre.org/data/definitions/476.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* 1 OR 3.7.3
AND
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* 1 OR
cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:a:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* 0 OR
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-4209
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4209
History
Created Old Value New Value Data Type Notes
2022-08-24 17:00:14 Added to TrackCVE