发布时间: 2023年10月20日
修改时间: 2024年10月31日
A vulnerability was discovered in Samba, where the flaw allows SMB clients to truncate files, even with read-only permissions when the Samba VFS module acl_xattr is configured with acl_xattr:ignore system acls = yes . The SMB protocol allows opening files when the client requests read-only access but then implicitly truncates the opened file to 0 bytes if the client specifies a separate OVERWRITE create disposition request. The issue arises in configurations that bypass kernel file system permissions checks, relying solely on Samba s permissions.
| NVD | openEuler | |
|---|---|---|
| Confidentiality | None | None |
| Attack Vector | Network | Network |
| CVSS评分 | 6.5 | 6.5 |
| Attack Complexity | Low | Low |
| Privileges Required | Low | Low |
| Scope | Unchanged | Unchanged |
| Integrity | High | High |
| User Interaction | None | None |
| Availability | None | None |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2023-1745 | samba security update | 2023年10月20日 |
| KylinSec-SA-2023-1750 | samba security update | 2023年10月20日 |
| KylinSec-SA-2023-1765 | samba security update | 2023年10月20日 |
| KylinSec-SA-2023-2289 | samba security update | 2023年10月20日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | samba | Fixed |
| KY3.4-5A | samba | Fixed |
| KY3.5.1 | samba | Fixed |
| KY3.5.2 | samba | Fixed |
