SUSE SLES11 Security Update : puppet (SUSE-SU-2018:0600-1)

Medium Nessus Plugin ID 107139

Synopsis

The remote SUSE host is missing one or more security updates.

Description

This update for puppet fixes the following issues :

- CVE-2017-2295: Fixed a security vulnerability where an attacker could force YAML deserialization in an unsafe manner, which would lead to remote code execution. In default, this update would break a backwards compatibility with Puppet agents older than 3.2.2 as the SLE11 master doesn't support other fact formats than pson in default anymore. In order to allow users to continue using their SLE11 agents a patch was added that enables sending PSON from agents. For non-SUSE clients older that 3.2.2 a new puppet master boolean option 'dangerous_fact_formats' was added. When it's set to true it enables using dangerous fact formats (e.g.
YAML). When it's set to false, only PSON fact format is accepted. (bsc#1040151), (bsc#1077767)

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

Solution

To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server 11-SP4:zypper in -t patch slessp4-puppet-13498=1

To bring your system up-to-date, use 'zypper patch'.

See Also

https://bugzilla.suse.com/1040151

https://bugzilla.suse.com/1077767

https://www.suse.com/security/cve/CVE-2017-2295.html

http://www.nessus.org/u?75a50b08

Plugin Details

Severity: Medium

ID: 107139

File Name: suse_SU-2018-0600-1.nasl

Version: 3.3

Type: local

Agent: unix

Published: 2018/03/06

Modified: 2018/08/02

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 6

Temporal Score: 4.4

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

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

CVSSv3

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:puppet, p-cpe:/a:novell:suse_linux:puppet-server, cpe:/o:novell:suse_linux:11

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2018/03/05

Reference Information

CVE: CVE-2017-2295