CVE-2020-25717

Publication date 9 November 2021

Last updated 18 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found in the way Samba maps domain users to local users. An authenticated attacker could use this flaw to cause possible privilege escalation.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
samba	25.10 questing	Fixed 2:4.13.14+dfsg-0ubuntu1
	25.04 plucky	Fixed 2:4.13.14+dfsg-0ubuntu1
	24.10 oracular	Fixed 2:4.13.14+dfsg-0ubuntu1
	24.04 LTS noble	Fixed 2:4.13.14+dfsg-0ubuntu1
	23.10 mantic	Fixed 2:4.13.14+dfsg-0ubuntu1
	23.04 lunar	Fixed 2:4.13.14+dfsg-0ubuntu1
	22.10 kinetic	Fixed 2:4.13.14+dfsg-0ubuntu1
	22.04 LTS jammy	Fixed 2:4.13.14+dfsg-0ubuntu1
	21.10 impish	Fixed 2:4.13.14+dfsg-0ubuntu0.21.10.1
	21.04 hirsute	Fixed 2:4.13.14+dfsg-0ubuntu0.21.04.1
	20.04 LTS focal	Fixed 2:4.13.14+dfsg-0ubuntu0.20.04.1
	18.04 LTS bionic	Fixed 2:4.7.6+dfsg~ubuntu-0ubuntu2.26
	16.04 LTS xenial	Vulnerable
	14.04 LTS trusty	Vulnerable

Notes

mdeslaur

The fix for this issue introduces behaviour changes

Severity score breakdown

Parameter	Value
Base score	8.1 · High
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	None
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N