Debian DSA-3909-1 : samba - security update (Orpheus' Lyre)

high Nessus Plugin ID 101554


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


Jeffrey Altman, Viktor Duchovni and Nico Williams identified a mutual authentication bypass vulnerability in samba, the SMB/CIFS file, print, and login server. Also known as Orpheus' Lyre, this vulnerability is located in Samba Kerberos Key Distribution Center (KDC-REP) component and could be used by an attacker on the network path to impersonate a server.

More details can be found on the vulnerability website ( and on the Samba project website (


Upgrade the samba packages.

For the oldstable distribution (jessie), this problem has been fixed in version 2:4.2.14+dfsg-0+deb8u7.

For the stable distribution (stretch), this problem has been fixed in version 2:4.5.8+dfsg-2+deb9u1.

See Also

Plugin Details

Severity: High

ID: 101554

File Name: debian_DSA-3909.nasl

Version: 3.7

Type: local

Agent: unix

Published: 7/17/2017

Updated: 1/4/2021

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

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:samba, cpe:/o:debian:debian_linux:8.0, 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: 7/14/2017

Reference Information

CVE: CVE-2017-11103

DSA: 3909