Vulnerability CVE-2021-4209: Information
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.
Severity: MEDIUM (6.5) Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| gnutls30 | sisyphus | 3.7.6-alt1 | 3.8.4-alt1 | ALT-PU-2022-2183-1 | 303294 | Fixed |
| gnutls30 | sisyphus_e2k | 3.7.6-alt1 | 3.8.4-alt1 | ALT-PU-2022-5470-1 | - | Fixed |
| gnutls30 | sisyphus_riscv64 | 3.7.6-alt1 | 3.8.4-alt1 | ALT-PU-2022-5385-1 | - | Fixed |
| gnutls30 | p10 | 3.6.16-alt6 | 3.6.16-alt6 | ALT-PU-2024-7207-2 | 345961 | Fixed |
| gnutls30 | p10_e2k | 3.6.16-alt6 | 3.6.16-alt6 | ALT-PU-2024-7454-1 | - | Fixed |
| gnutls30 | p9 | 3.6.16-alt6 | 3.6.16-alt6 | ALT-PU-2024-7788-2 | 345962 | Fixed |
| gnutls30 | c10f1 | 3.6.16-alt6 | 3.6.16-alt6 | ALT-PU-2024-7758-3 | 348084 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://gitlab.com/gnutls/gnutls/-/issues/1306 |
|
| https://access.redhat.com/security/cve/CVE-2021-4209 |
|
| https://gitlab.com/gnutls/gnutls/-/merge_requests/1503 |
|
| https://bugzilla.redhat.com/show_bug.cgi?id=2044156 |
|
| https://gitlab.com/gnutls/gnutls/-/commit/3db352734472d851318944db13be73da61300568 |
|
| https://security.netapp.com/advisory/ntap-20220915-0005/ |
|