UltraVNC revision 1206 has multiple off-by-one vulnerabilities in VNC client code connected with improper usage of ClientConnection::ReadString function, which can potentially result code execution. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1207.
UltraVNC, en su revisión 1206, tiene múltiples vulnerabilidades de error por un paso en el código del cliente VNC conectadas con el uso incorrecto de la función ClientConnection::ReadString, lo cual puede resultar, potencialmente, en la ejecución de código. Este ataque parece ser explotable mediante la conectividad de red. Se han solucionado estas vulnerabilidades en la revisión 1207.
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-193
|
| [email protected] | Primary |
en
CWE-193
|
| Vendor | Product | Version | Update | Type |
|---|---|---|---|---|
| uvnc | ultravnc | * | <built-in method update of dict object at 0x7e60bbd63640> | Application |
| siemens | sinumerik_access_mymachine\/p2p | * | <built-in method update of dict object at 0x7e60b847a700> | Application |
| siemens | sinumerik_pcu_base_win10_software\/ipc | * | <built-in method update of dict object at 0x7e60b8478780> | Application |
| siemens | sinumerik_pcu_base_win7_software\/ipc | * | <built-in method update of dict object at 0x7e60baa08e80> | 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:*:*:*:*:*:*:*:* |