发布时间: 2024年5月31日
修改时间: 2024年6月21日
A race condition leading to a stack use-after-free flaw was found in libvirt. Due to a bad assumption in the virNetClientIOEventLoop() method, the `data` pointer to a stack-allocated virNetClientIOEventData structure ended up being used in the virNetClientIOEventFD callback while the data pointer s stack frame was concurrently being freed when returning from virNetClientIOEventLoop(). The virtproxyd daemon can be used to trigger requests. If libvirt is configured with fine-grained access control, this issue, in theory, allows a user to escape their otherwise limited access. This flaw allows a local, unprivileged user to access virtproxyd without authenticating. Remote users would need to authenticate before they could access it.
| NVD | openEuler | |
|---|---|---|
| CVSS评分 | 6.2 | 6.2 |
| Attack Vector | Local | Local |
| Attack Complexity | Low | Low |
| Privileges Required | None | Low |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality | None | None |
| Integrity | None | None |
| Availability | High | High |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2024-3523 | libvirt security update | 2024年5月31日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | libvirt | Fixed |
| KY3.4-5A | libvirt | Fixed |
| KY3.5.1 | libvirt | Fixed |
| KY3.5.2 | libvirt | Fixed |
| V6 | libvirt | Fixed |
