发布时间: 2023年9月15日
修改时间: 2024年10月31日
A flaw was found in the QEMU built-in VNC server. When a client connects to the VNC server, QEMU checks whether the current number of connections crosses a certain threshold and if so, cleans up the previous connection. If the previous connection happens to be in the handshake phase and fails, QEMU cleans up the connection again, resulting in a NULL pointer dereference issue. This could allow a remote unauthenticated client to cause a denial of service.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | None | None |
| Attack Vector | Network | Network |
| CVSS评分 | 7.5 | 7.5 |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| Scope | Unchanged | Unchanged |
| Integrity | None | None |
| User Interaction | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2023-2004 | qemu security update | 2023年9月15日 |
| KylinSec-SA-2023-2041 | qemu security update | 2023年10月13日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | qemu | Fixed |
| KY3.4-5A | qemu | Fixed |
| KY3.5.1 | qemu | Fixed |
| KY3.5.2 | qemu | Fixed |
