Updated: 2024-11-30 04:18:58.357202
Description:
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.
| Links | NIST | CIRCL | RHEL | Ubuntu |
| Severity | Score | |
|---|---|---|
| CVSS Version 2.x | 0 | |
| CVSS Version 3.x | MEDIUM | 6.5 |
| OS name | Project name | Version | Score | Severity | Status | Errata | Last updated | Statement |
|---|---|---|---|---|---|---|---|---|
| CentOS 6 ELS | samba | 3.6.23 | 6.5 | MEDIUM | Ignored | 2023-11-15 04:08:48 | ||
| CentOS 7 ELS | samba | 4.10.16 | 6.5 | MEDIUM | Ignored | 2024-06-25 11:20:12 | ||
| CentOS 8.4 ELS | samba | 4.13.3-5 | 6.5 | MEDIUM | Released | CLSA-2024:1723483357 | 2024-08-12 14:36:58 | |
| CentOS 8.5 ELS | samba | 4.14.5-7 | 6.5 | MEDIUM | Released | CLSA-2024:1723058766 | 2024-08-07 17:40:28 | |
| CloudLinux 6 ELS | samba | 3.6.23 | 6.5 | MEDIUM | Ignored | 2023-11-15 04:08:48 | ||
| Oracle Linux 6 ELS | samba | 3.6.23 | 6.5 | MEDIUM | Ignored | 2023-11-15 04:08:48 | ||
| Ubuntu 16.04 ELS | samba | 4.3.11 | 6.5 | MEDIUM | Ignored | 2023-11-15 04:08:48 | ||
| Ubuntu 18.04 ELS | samba | 4.7.6 | 6.5 | MEDIUM | Ignored | 2023-11-15 04:08:48 |