VDB
DEBIAN-CVE-2021-4209
DEBIAN-CVE-2021-4209
PUBLISHED
CVSS 6.5 MEDIUM
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.
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | gnutls28 | 0, 0, 0 |
| Debian:12 | gnutls28 | 0, 0, 0 |
| Debian:13 | gnutls28 | 0, 0, 0 |
| Debian:11 | gnutls28 | 0, 3.7.1-5, 0 |
Exploit Intelligence
- glcve_test.go (github-poc)
Timeline
- Aug 24, 2022 CVE Published
- Apr 28, 2026 CVE Updated