A vulnerability was found in Samba from version (including) 4.9 to versions before 4.9.6 and 4.10.2. During the creation of a new Samba AD DC, files are created in a private subdirectory of the install location. This directory is typically mode 0700, that is owner (root) only access. However in some upgraded installations it will have other permissions, such as 0755, because this was the default before Samba 4.8. Within this directory, files are created with mode 0666, which is world-writable, including a sample krb5.conf, and the list of DNS names and servicePrincipalName values to update.
This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.1, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts limited integrity, and availability (service disruption) for affected systems. Impacting 9 products from samba, from fedoraproject, from synology and 6 others, organizations running these solutions should prioritize assessment and patching.
First disclosed in 2019, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.
2019-04-09T16:29:01.867
2025-01-14T19:29:55.853
Modified
CVSSv3.1: 6.1 (MEDIUM)
AV:L/AC:L/Au:N/C:N/I:P/A:P
3.9
4.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | samba | samba | < 4.9.6 | Yes |
| Application | samba | samba | < 4.10.2 | Yes |
| Operating System | fedoraproject | fedora | 29 | Yes |
| Operating System | fedoraproject | fedora | 30 | Yes |
| Application | synology | directory_server | - | Yes |
| Application | synology | router_manager | 1.2 | Yes |
| Operating System | synology | diskstation_manager | 5.2 | Yes |
| Operating System | synology | diskstation_manager | 6.1 | Yes |
| Operating System | synology | diskstation_manager | 6.2 | Yes |
| Operating System | synology | skynas_firmware | - | Yes |
| Hardware | synology | skynas | - | No |
| Operating System | synology | vs960hd_firmware | < 2.3.6-1720 | Yes |
| Hardware | synology | vs960hd | - | No |
SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For samba's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.