发布时间: 2023年2月6日
修改时间: 2023年2月6日
On Windows, restricted files can be accessed via os.DirFS and http.Dir. The os.DirFS function and http.Dir type provide access to a tree of files rooted at a given directory. These functions permit access to Windows device files under that root. For example, os.DirFS( C:/tmp ).Open( COM1 ) opens the COM1 device. Both os.DirFS and http.Dir only provide read-only filesystem access. In addition, on Windows, an os.DirFS for the directory (the root of the current drive) can permit a maliciously crafted path to escape from the drive and access any path on the system. With fix applied, the behavior of os.DirFS( ) has changed. Previously, an empty root was treated equivalently to / , so os.DirFS( ).Open( tmp ) would open the path /tmp . This now returns an error.
| NVD | openEuler | |
|---|---|---|
| CVSS评分 | 7.5 | 7.5 |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality | High | High |
| Integrity | None | None |
| Availability | None | None |
| 公告名 | 概要 | 发布时间 |
|---|---|---|
| KylinSec-SA-2023-1036 | On Windows, restricted files can be accessed via os.DirFS and http.Dir. The os.DirFS function and http.Dir type provide access to a tree of files rooted at a given directory. These functions permit access to Windows device files under that root. For example, os.DirFS( C:/tmp ).Open( COM1 ) opens the COM1 device. Both os.DirFS and http.Dir only provide read-only filesystem access. In addition, on Windows, an os.DirFS for the directory (the root of the current drive) can permit a maliciously crafted path to escape from the drive and access any path on the system. With fix applied, the behavior of os.DirFS( ) has changed. Previously, an empty root was treated equivalently to / , so os.DirFS( ).Open( tmp ) would open the path /tmp . This now returns an error. | 2023年2月6日 |
| 产品 | 包 | 状态 |
|---|---|---|
| KY3.4-4A | golang | Unaffected |
| KY3.4-5 | golang | Unaffected |
| KY3.5.1 | golang | Unaffected |
| KY3.5.2 | golang | Unaffected |
