Synology-SA-20:09 Samba AD DC
Publish Time: UTC+8
Last Updated: UTC+8
- Severity
- Important
- Status
- Resolved
Abstract
CVE-2020-10704 allows to conduct denial-of-service attacks via a susceptible version of Synology Directory Server.
None of Synology products are affected by CVE-2020-10700 as this vulnerability only affect Samba 4.10.0 and later.
Affected Products
| Product | Severity | Fixed Release Availability |
|---|---|---|
| Synology Directory Server | Important | Upgrade DSM to 6.2.4-25513 or above. |
Mitigation
None
Detail
CVE-2020-10704
- Severity: Important
- CVSS3 Base Score: 7.5
- CVSS3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.
CVE-2020-10700
- Severity: Not affected
- CVSS3 Base Score: 0.0
- CVSS3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N
- A use-after-free flaw was found in the way samba AD DC LDAP servers, handled 'Paged Results' control is combined with the 'ASQ' control. A malicious user in a samba AD could use this flaw to cause denial of service. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.
Reference
Revision
| Revision | Date | Description |
|---|---|---|
| 1 | 2020-04-29 | Initial public release. |
| 2 | 2021-02-23 | Update for Synology Directory Server is now available in Affected Products. |
| 3 | 2021-04-12 | Disclosed vulnerability details. |