curl before 7.86.0 has a double free. If curl is told to use an HTTP proxy for a transfer with a non-HTTP(S) URL, it sets up the connection to the remote server by issuing a CONNECT request to the proxy, and then tunnels the rest of the protocol through. An HTTP proxy might refuse this request (HTTP proxies often only allow outgoing connections to specific port numbers, like 443 for HTTPS) and instead return a non-200 status code to the client. Due to flaws in the error/cleanup handling, this could trigger a double free in curl if one of the following schemes were used in the URL for the transfer: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps, or telnet. The earliest affected version is 7.77.0.
curl antes de la versión 7.86.0 tiene un double free. Si se le dice a curl que use un proxy HTTP para una transferencia con una URL que no sea HTTP(S), configura la conexión al servidor remoto emitiendo una solicitud CONNECT al proxy y luego canaliza el resto del protocolo. Un proxy HTTP podría rechazar esta solicitud (los proxy HTTP a menudo solo permiten conexiones salientes a números de puerto específicos, como 443 para HTTPS) y en su lugar devolver un código de estado distinto de 200 al cliente. Debido a fallas en el manejo de errores/limpieza, esto podría desencadenar un double free in curl si se usara uno de los siguientes esquemas en la URL para la transferencia: dict, gopher, gophers, ldap, ldaps, rtmp, rtmps o telnet. La primera versión afectada es la 7.77.0.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | HIGH |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | HIGH |
| Integrity Impact | HIGH |
| Availability Impact | HIGH |
| Source | Type | Description |
|---|---|---|
| [email protected] | Primary |
en
CWE-415
|
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | Secondary |
en
CWE-415
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| haxx | curl | * | <built-in method update of dict object at 0x7fd2d24953c0> | Application |
| fedoraproject | fedora | 35 | <built-in method update of dict object at 0x7fd2d2495040> | Operating System |
| fedoraproject | fedora | 36 | <built-in method update of dict object at 0x7fd38541d900> | Operating System |
| fedoraproject | fedora | 37 | <built-in method update of dict object at 0x7fd36a654780> | Operating System |
| netapp | h300s_firmware | - | <built-in method update of dict object at 0x7fd2d2496a80> | Operating System |
| netapp | h500s_firmware | - | <built-in method update of dict object at 0x7fd2d24949c0> | Operating System |
| netapp | h700s_firmware | - | <built-in method update of dict object at 0x7fd36a657680> | Operating System |
| netapp | h410s_firmware | - | <built-in method update of dict object at 0x7fd36a654a80> | Operating System |
| netapp | ontap_9 | - | <built-in method update of dict object at 0x7fd36a654cc0> | Application |
| apple | macos | * | <built-in method update of dict object at 0x7fd2d2496a40> | Operating System |
| apple | macos | * | <built-in method update of dict object at 0x7fd3850545c0> | Operating System |
| splunk | universal_forwarder | * | <built-in method update of dict object at 0x7fd36a654840> | Application |
| splunk | universal_forwarder | * | <built-in method update of dict object at 0x7fd3850564c0> | Application |
| splunk | universal_forwarder | 9.1.0 | <built-in method update of dict object at 0x7fd385054e40> | Application |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| No | cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| No | cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| No | cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| No | cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:netapp:ontap_9:-:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:* |