UltraVNC revision 1211 has a heap buffer overflow vulnerability in VNC server code inside file transfer request handler, which can potentially result in code execution. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1212.
UltraVNX, en su revisión 1211, tiene una vulnerabilidad de desbordamiento de búfer basado en memoria dinámica (heap) en el código del servidor VNC dentro de un manipulador de peticiones de trasferencia de archivos, lo que podría resultar en, potencialmente, la ejecución de código. 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:H/I:H/A:H
| Attack Vector | NETWORK |
|---|---|
| Attack Complexity | LOW |
| Privileges Required | NONE |
| User Interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality Impact | HIGH |
| Integrity Impact | HIGH |
| Availability Impact | HIGH |
AV:N/AC:L/Au:N/C:P/I:P/A:P
| Access Vector | NETWORK |
|---|---|
| Access Complexity | LOW |
| Authentication | NONE |
| Confidentiality Impact | PARTIAL |
| Integrity Impact | PARTIAL |
| Availability Impact | PARTIAL |
| Source | Type | Description |
|---|---|---|
| [email protected] | Secondary |
en
CWE-122
|
| [email protected] | Primary |
en
CWE-787
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| uvnc | ultravnc | * | <built-in method update of dict object at 0x7e60a888fd40> | Application |
| siemens | sinumerik_access_mymachine\/p2p | * | <built-in method update of dict object at 0x7e60ba2a48c0> | Application |
| siemens | sinumerik_pcu_base_win10_software\/ipc | * | <built-in method update of dict object at 0x7e60a888f2c0> | Application |
| siemens | sinumerik_pcu_base_win7_software\/ipc | * | <built-in method update of dict object at 0x7e60a888cdc0> | 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:*:*:*:*:*:*:*:* |