CVE-2021-4209
published 2022-08-24CVE-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…
medium6.5CVSS 3.1
AVNACLPRLUINSUCNINAH
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
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | gnutls28 | < gnutls28 3.7.3-2 (bookworm) | gnutls28 3.7.3-2 (bookworm) |
| gnu | gnutls | < 3.7.3 | 3.7.3 |
| gnu | gnutls | — | — |
| msrc | cm1_gnutls_3.6.14-7_on_cbl_mariner_1.0 | — | — |
| redhat | enterprise_linux | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
osv6.5MEDIUM