Debian DLA-951-1 : samba security update (SambaCry)

Critical Nessus Plugin ID 100390

Synopsis

The remote Debian host is missing a security update.

Description

steelo discovered a remote code execution vulnerability in Samba, a SMB/CIFS file, print, and login server for Unix. A malicious client with access to a writable share, can take advantage of this flaw by uploading a shared library and then cause the server to load and execute it.

For Debian 7 'Wheezy', these problems have been fixed in version 2:3.6.6-6+deb7u13.

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/2017/05/msg00022.html

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

Plugin Details

Severity: Critical

ID: 100390

File Name: debian_DLA-951.nasl

Version: 3.13

Type: local

Agent: unix

Published: 2017/05/25

Modified: 2018/07/09

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSSv2

Base Score: 10

Temporal Score: 8.3

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

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

CVSSv3

Base Score: 9.8

Temporal Score: 9

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libnss-winbind, p-cpe:/a:debian:debian_linux:libpam-smbpass, p-cpe:/a:debian:debian_linux:libpam-winbind, p-cpe:/a:debian:debian_linux:libsmbclient, p-cpe:/a:debian:debian_linux:libsmbclient-dev, p-cpe:/a:debian:debian_linux:libwbclient-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:7.0

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: 2017/05/24

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Samba is_known_pipename() Arbitrary Module Load)

Reference Information

CVE: CVE-2017-7494