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.
Se ha encontrado un fallo de desreferencia de puntero NULL en GnuTLS. Como las funciones de actualización de hash de Nettle llaman internamente a memcpy, proporcionar una entrada de longitud cero puede causar un comportamiento indefinido. Este fallo conlleva a una denegación de servicio tras la autenticación en raras circunstancias.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | LOW |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | HIGH |
| Source | Type | Description |
|---|---|---|
| [email protected] | Secondary |
en
CWE-476
|
| [email protected] | Primary |
en
CWE-476
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| gnu | gnutls | * | <built-in method update of dict object at 0x7fd34927e3c0> | Application |
| redhat | enterprise_linux | 8.0 | <built-in method update of dict object at 0x7fd36b44a300> | Operating System |
| netapp | active_iq_unified_manager | - | <built-in method update of dict object at 0x7fd3401440c0> | Application |
| netapp | solidfire_\&_hci_management_node | - | <built-in method update of dict object at 0x7fd36b44b300> | Application |
| netapp | hci_bootstrap_os | - | <built-in method update of dict object at 0x7fd36b44a240> | Application |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:gnu:gnutls:*:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:* |
| Yes | cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:netapp:hci_bootstrap_os:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| No | cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:* |