CVE-2019-19344

Publication date 21 January 2020

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

There is a use-after-free issue in all samba 4.9.x versions before 4.9.18, all samba 4.10.x versions before 4.10.12 and all samba 4.11.x versions before 4.11.5, essentially due to a call to realloc() while other local variables still point at the original buffer.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
samba	19.10 eoan	Fixed 2:4.10.7+dfsg-0ubuntu2.4
	19.04 disco	Fixed 2:4.10.0+dfsg-0ubuntu2.8
	18.04 LTS bionic	Not affected
	16.04 LTS xenial	Not affected
	14.04 LTS trusty	Not affected

Notes

mdeslaur

4.9 and later only

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	Low
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-4244-1
Samba vulnerabilities
21 January 2020