CVE-2017-14746

Publication date 21 November 2017

Last updated 25 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

Score breakdown

Description

Use-after-free vulnerability in Samba 4.x before 4.7.3 allows remote attackers to execute arbitrary code via a crafted SMB1 request.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
samba	17.10 artful	Fixed 2:4.6.7+dfsg-1ubuntu3.1
	17.04 zesty	Fixed 2:4.5.8+dfsg-0ubuntu0.17.04.8
	16.04 LTS xenial	Fixed 2:4.3.11+dfsg-0ubuntu0.16.04.12
	14.04 LTS trusty	Fixed 2:4.3.11+dfsg-0ubuntu0.14.04.13

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3486-1
Samba vulnerabilities
21 November 2017

Other references