Debian DLA-379-1 : samba security update

Medium Nessus Plugin ID 87683

Synopsis

The remote Debian host is missing a security update.

Description

Several vulnerabilities were found in Samba, a SMB/CIFS implementation that provides a file, print, and login server.

CVE-2015-5252

Jan 'Yenya' Kasprzak and the Computer Systems Unit team at Faculty of Informatics, Masaryk University, reported that samba wrongly verified symlinks, making it possible to access resources outside the shared path, under certain circumstances.

CVE-2015-5296

Stefan Metzmacher of SerNet and the Samba Team discovered that samba did not ensure that signing was negotiated when a client established an encrypted connection against a samba server.

CVE-2015-5299

Samba was vulnerable to a missing access control check in the VFS shadow_copy2 module, that could allow unauthorized users to access snapshots.

For Debian 6 'Squeeze', this issue has been fixed in samba version 2:3.5.6~dfsg-3squeeze13. We recommend you to upgrade your samba packages.

Learn more about the Debian Long Term Support (LTS) Project and how to apply these updates at: https://wiki.debian.org/LTS/

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/2016/01/msg00001.html

https://packages.debian.org/source/squeeze-lts/samba

https://wiki.debian.org/LTS/

Plugin Details

Severity: Medium

ID: 87683

File Name: debian_DLA-379.nasl

Version: 2.8

Type: local

Agent: unix

Published: 2016/01/04

Updated: 2018/07/06

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

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

CVSS v3.0

Base Score: 7.2

Temporal Score: 6.3

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libpam-smbpass, p-cpe:/a:debian:debian_linux:libsmbclient, p-cpe:/a:debian:debian_linux:libsmbclient-dev, p-cpe:/a:debian:debian_linux:libwbclient0, p-cpe:/a:debian:debian_linux:samba, p-cpe:/a:debian:debian_linux:samba-common, p-cpe:/a:debian:debian_linux:samba-common-bin, p-cpe:/a:debian:debian_linux:samba-dbg, p-cpe:/a:debian:debian_linux:samba-doc, p-cpe:/a:debian:debian_linux:samba-doc-pdf, p-cpe:/a:debian:debian_linux:samba-tools, p-cpe:/a:debian:debian_linux:smbclient, p-cpe:/a:debian:debian_linux:swat, p-cpe:/a:debian:debian_linux:winbind, cpe:/o:debian:debian_linux:6.0

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/01/03

Reference Information

CVE: CVE-2015-5252, CVE-2015-5296, CVE-2015-5299