CVE-2017-12151

Publication date 20 September 2017

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.4 · High

Score breakdown

A flaw was found in the way samba client before samba 4.4.16, samba 4.5.14 and samba 4.6.8 used encryption with the max protocol set as SMB3. The connection could lose the requirement for signing and encrypting to any DFS redirects, allowing an attacker to read or alter the contents of the connection via a man-in-the-middle attack.

Status

Package Ubuntu Release Status
samba 17.04 zesty
Fixed 2:4.5.8+dfsg-0ubuntu0.17.04.7
16.04 LTS xenial
Fixed 2:4.3.11+dfsg-0ubuntu0.16.04.11
14.04 LTS trusty
Fixed 2:4.3.11+dfsg-0ubuntu0.14.04.12

Severity score breakdown

Parameter Value
Base score 7.4 · High
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-3426-1
    • Samba vulnerabilities
    • 21 September 2017

Other references