A flaw was found in the way Samba initiated signed DCE/RPC connections. A man-in-the-middle attacker could use this flaw to downgrade the connection to not use signing and therefore impersonate the server.
Find out more about CVE-2016-2119 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 5.4 |
|---|---|
| Base Metrics | AV:A/AC:M/Au:N/C:P/I:P/A:P |
| Access Vector | Adjacent Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | Partial |
| CVSS3 Base Score | 7.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Attack Vector | Adjacent Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 7 (samba) | RHSA-2016:1486 | 2016-07-26 |
| Red Hat Gluster 3 Samba on RHEL-6 (samba) | RHSA-2016:1494 | 2016-07-26 |
| Red Hat Gluster 3 Samba on RHEL-7 (samba) | RHSA-2016:1494 | 2016-07-26 |
| Red Hat Enterprise Linux 6 (samba4) | RHSA-2016:1487 | 2016-07-26 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | samba | Not affected |
| Red Hat Enterprise Linux 5 | samba | Not affected |
Vulmon