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Debian DSA-4443-1 : samba - security update

high Nessus Plugin ID 125094

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Synopsis

The remote Debian host is missing a security-related update.

Description

Isaac Boukris and Andrew Bartlett discovered that the S4U2Self Kerberos extension used in Samba's Active Directory support was susceptible to man-in-the-middle attacks caused by incomplete checksum validation.

Details can be found in the upstream advisory at

Solution

Upgrade the samba packages.

For the stable distribution (stretch), this problem has been fixed in version 2:4.5.16+dfsg-1+deb9u2.

See Also

https://security-tracker.debian.org/tracker/source-package/samba

https://packages.debian.org/source/stretch/samba

https://www.debian.org/security/2019/dsa-4443

Plugin Details

Severity: High

ID: 125094

File Name: debian_DSA-4443.nasl

Version: 1.5

Type: local

Agent: unix

Published: 5/15/2019

Updated: 1/17/2020

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:samba, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/14/2019

Vulnerability Publication Date: 7/31/2019

Reference Information

CVE: CVE-2018-16860

DSA: 4443