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Debian DLA-894-1 : samba security update

high Nessus Plugin ID 99291

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Synopsis

The remote Debian host is missing a security 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 exploting a symlink race to access areas of the server file system not exported under a share definition.

For Debian 7 'Wheezy', these problems have been fixed in version 2:3.6.6-6+deb7u12.

We recommend that you upgrade your samba packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected packages.

See Also

https://lists.debian.org/debian-lts-announce/2017/04/msg00013.html

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

Plugin Details

Severity: High

ID: 99291

File Name: debian_DLA-894.nasl

Version: 3.10

Type: local

Agent: unix

Published: 4/12/2017

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.7

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: 6.7

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:libpam-winbind, p-cpe:/a:debian:debian_linux:samba-doc, p-cpe:/a:debian:debian_linux:smbclient, p-cpe:/a:debian:debian_linux:winbind, p-cpe:/a:debian:debian_linux:libsmbclient, p-cpe:/a:debian:debian_linux:samba-common-bin, p-cpe:/a:debian:debian_linux:libwbclient-dev, p-cpe:/a:debian:debian_linux:samba-dbg, p-cpe:/a:debian:debian_linux:libwbclient0, cpe:/o:debian:debian_linux:7.0, p-cpe:/a:debian:debian_linux:samba-tools, p-cpe:/a:debian:debian_linux:samba-doc-pdf, p-cpe:/a:debian:debian_linux:swat, p-cpe:/a:debian:debian_linux:libsmbclient-dev, p-cpe:/a:debian:debian_linux:libnss-winbind, p-cpe:/a:debian:debian_linux:libpam-smbpass, p-cpe:/a:debian:debian_linux:samba, p-cpe:/a:debian:debian_linux:samba-common

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: 4/11/2017

Reference Information

CVE: CVE-2017-2619