CVE-2020-10704

Publication date 28 April 2020

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A flaw was found when using samba as an Active Directory Domain Controller. Due to the way samba handles certain requests as an Active Directory Domain Controller LDAP server, an unauthorized user can cause a stack overflow leading to a denial of service. The highest threat from this vulnerability is to system availability. This issue affects all samba versions before 4.10.15, before 4.11.8 and before 4.12.2.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
samba	20.04 LTS focal	Fixed 2:4.11.6+dfsg-0ubuntu1.1
	19.10 eoan	Fixed 2:4.10.7+dfsg-0ubuntu2.5
	18.04 LTS bionic	Fixed 2:4.7.6+dfsg~ubuntu-0ubuntu2.16
	16.04 LTS xenial	Fixed 2:4.3.11+dfsg-0ubuntu0.16.04.26
	14.04 LTS trusty	Fixed 2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6

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Severity score breakdown

CVSS version: CVSS v3.0

Base score 7.5 · High

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	7.5 · High
Exploitability score	-
Impact score	-

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-4341-2
Samba vulnerability
29 April 2020

USN-4341-1
Samba vulnerabilities
28 April 2020