Debian DSA-3816-1 : samba - security update

Medium Nessus Plugin ID 97923

Synopsis

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

Description

Jann Horn of Google discovered a time-of-check, time-of-use race condition in Samba, a SMB/CIFS file, print, and login server for Unix.
A malicious client can take advantage of this flaw by exploiting a symlink race to access areas of the server file system not exported under a share definition.

Solution

Upgrade the samba packages.

For the stable distribution (jessie), this problem has been fixed in version 2:4.2.14+dfsg-0+deb8u4.

See Also

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

https://www.debian.org/security/2017/dsa-3816

Plugin Details

Severity: Medium

ID: 97923

File Name: debian_DSA-3816.nasl

Version: 3.12

Type: local

Agent: unix

Published: 2017/03/24

Updated: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 6

Temporal Score: 4.7

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.7

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:P/RL:O/RC:C

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/03/23

Reference Information

CVE: CVE-2017-2619

DSA: 3816