UltraVNC revision 1211 has a stack buffer overflow vulnerability in VNC server code inside file transfer request handler, which can result in Denial of Service (DoS). This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
UltraVNC, en su revisión 1211, tiene una vulnerabilidad de desbordamiento de búfer basado en pila en el código del servidor VNC dentro del manipulador de peticiones de trasferencia de datos, lo que puede resultar en una denegación de servicio (DoS). Este ataque parece ser explotable mediante la conectividad de red. Esta vulnerabilidad se ha solucionado en la revisión 1212.
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 |
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] | Secondary |
en
CWE-121
|
| [email protected] | Primary |
en
CWE-787
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| uvnc | ultravnc | * | <built-in method update of dict object at 0x7e6107e479c0> | Application |
| siemens | sinumerik_access_mymachine\/p2p | * | <built-in method update of dict object at 0x7e6107e46680> | Application |
| siemens | sinumerik_pcu_base_win10_software\/ipc | * | <built-in method update of dict object at 0x7e6112393040> | Application |
| siemens | sinumerik_pcu_base_win7_software\/ipc | * | <built-in method update of dict object at 0x7e6107e44a80> | Application |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:uvnc:ultravnc:*:*:*:*:*:*:*:* |
| Vulnerable | CPE |
|---|---|
| Yes | cpe:2.3:a:siemens:sinumerik_access_mymachine\/p2p:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:a:siemens:sinumerik_pcu_base_win10_software\/ipc:*:*:*:*:*:*:*:* |
| Yes | cpe:2.3:a:siemens:sinumerik_pcu_base_win7_software\/ipc:*:*:*:*:*:*:*:* |