medium6.5
CVE-2021-4209
A NULL pointer dereference flaw was found in GnuTLS.
Impact
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 products
| Vendor | Product | Affected versions |
|---|---|---|
| Gnu | Gnutls | before 3.7.3 |
| Redhat | Enterprise Linux | Version 8.0 |
| Netapp | Active Iq Unified Manager | All versions |
| Netapp | Solidfire \& Hci Management Node | All versions |
| Netapp | Hci Bootstrap Os | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- https://access.redhat.com/security/cve/CVE-2021-4209
- https://bugzilla.redhat.com/show_bug.cgi?id=2044156
- https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568
- https://gitlab.com/gnutls/gnutls/-/issues/1306
- https://gitlab.com/gnutls/gnutls/-/merge_requests/1503
- https://security.netapp.com/advisory/ntap-20220915-0005/
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html