The MS-SAMR and MS-LSAD protocol implementations in Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 mishandle DCERPC connections, which allows man-in-the-middle attackers to perform protocol-downgrade attacks and impersonate users by modifying the client-server data stream, aka "BADLOCK."
CVE Status: Modified
Attribute | Value |
---|---|
Attack Complexity | HIGH |
Attack Vector | NETWORK |
Availability Impact | HIGH |
Base Score | 7.5 |
Base Severity | HIGH |
Confidentiality Impact | HIGH |
Integrity Impact | HIGH |
Privileges Required | NONE |
Scope | UNCHANGED |
User Interaction | REQUIRED |
Vector String | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
Exploitability Score | 1.6 |
Impact Score | 5.9 |
Source | [email protected] |
Type | Primary |