CVEvulnerability
CVE-2021-4209
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2022-08-24
- Last modified
- 2026-10-14
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-476
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.
Affected configurations
• gnu gnutls (< 3.7.3)
• redhat enterprise linux 8.0
• netapp active iq unified manager
• netapp solidfire \& hci management node
• netapp hci bootstrap os
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- 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
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html cert-portal.siemens.com