A flaw was found in the way samba allowed the use of weak NTLMv1 authentication even when NTLMv1 was explicitly disabled. A man-in-the-middle attacker could use this flaw to read the credential and other details passed between the samba server and client.
Find out more about CVE-2018-1139 from the MITRE CVE dictionary dictionary and NIST NVD.
| CVSS3 Base Score | 5.4 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
| Attack Vector | Adjacent Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | Low |
| Availability Impact | None |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Gluster Storage 3.4 for RHEL 7 (samba) | RHSA-2018:2613 | 2018-09-04 |
| Red Hat Gluster Storage 3.4 for RHEL 6 (samba) | RHSA-2018:2612 | 2018-09-04 |
| Red Hat Enterprise Linux 7 (samba) | RHSA-2018:3056 | 2018-10-30 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | samba | Not affected |
| Red Hat Enterprise Linux 6 | samba4 | Not affected |
| Red Hat Enterprise Linux 5 | samba | Not affected |
| Red Hat Enterprise Linux 5 | samba3x | Not affected |
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