Synology-SA-22:02 Samba
Publish Time: 2022-01-27 18:50:45 UTC+8
Last Updated: 2022-04-15 18:38:33 UTC+8
- Severity
- Important
- Status
- Resolved
Abstract
A vulnerability allows remote authenticated users to execute arbitrary code via a susceptible version of Synology DiskStation Manager (DSM).
Affected Products
| Product | Severity | Fixed Release Availability |
|---|---|---|
| DSM 7.0 | Not affected | N/A |
| DSM 6.2 | Important | Upgrade to 6.2.4-25556-4 or above. |
| DSMUC 3.1 | Not affected | N/A |
| VS960HD | Not affected | N/A |
| SRM 1.2 | Not affected | N/A |
Mitigation
If you need immediate assistance, please contact Synology technical support via https://account.synology.com/support.
Detail
- CVE-2021-44142
- Severity: Important
- CVSS3 Base Score: 8.8
- CVSS3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.
Reference
Revision
| Revision | Date | Description |
|---|---|---|
| 1 | 2022-01-27 | Initial public release. |
| 2 | 2022-02-02 | Disclosed vulnerability details. |