CVE-2018-1139

Advisory lineage Upstream: 0 Downstream: 9
Modified
Published: 22 Aug 2018, 14:00
Last modified:05 Aug 2024, 03:51

Vulnerability Summary

Overall Risk (default)
medium
33/100
CVSS Score
8.1 HIGH
v3.1 (nvd)
EPSS Score
1.62% LOW
2% probability +0.09%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

22 Aug 2018, 14:00
Published
Vulnerability first disclosed
05 Aug 2024, 03:51
Last Modified
Vulnerability information updated

Description

A flaw was found in the way samba before 4.7.9 and 4.8.4 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.

CVSS Metrics

  • v3.1•HIGH•Score: 8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v3.0•MEDIUM•Score: 5.4CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 1.62%• Percentile: 82%

Techniques & Countermeasures

  • CWE-522•Insufficiently Protected Credentials

    The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected Systems

  • canonical•ubuntu_linux

    14.04 | 16.04 | 18.04

  • redhat•enterprise_linux_desktop

    7.0

  • redhat•enterprise_linux_server

    7.0

  • redhat•enterprise_linux_workstation

    7.0

  • samba•samba

    ≥ 4.7.0, < 4.7.9 | ≥ 4.8.0, < 4.8.4

  • the samba team•samba

    < 4.7.9 | < 4.8.4

References (9)