In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.
En la biblioteca GNU C (también conocida como glibc o libc6) hasta la versión 2.28, los intentos para resolver un nombre de host manipulado mediante getaddrinfo() conducen a la asignación de un descriptor de un socket que no está cerrado. Esto está relacionado con la función if_nametoindex().
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | HIGH |
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Type: Secondary
Exploitability Score: 3.9
Impact Score: 3.6
AV:N/AC:L/Au:N/C:N/I:N/A:P
| Access Vector | NETWORK |
|---|---|
| Access Complexity | LOW |
| Authentication | NONE |
| Confidentiality Impact | NONE |
| Integrity Impact | NONE |
| Availability Impact | PARTIAL |
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
CWE-20
|
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary |
en
CWE-404
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| gnu | glibc | * | <built-in method update of dict object at 0x7fd34122d7c0> | Application |
| fedoraproject | fedora | 28 | <built-in method update of dict object at 0x7fd34122c780> | Operating System |
| fedoraproject | fedora | 29 | <built-in method update of dict object at 0x7fd369ad67c0> | Operating System |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* |