SUSE SLED12 / SLES12 Security Update : dhcp (SUSE-SU-2016:1791-1)

medium Nessus Plugin ID 93181
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

This update for dhcp fixes the following issues :

Security issue fixed :

- CVE-2016-2774: Fixed a denial of service attack against the DHCP server over the OMAPI TCP socket, which could be used by network adjacent attackers to make the DHCP server non-functional (bsc#969820).

Non security issues fixed :

- Rename freeaddrinfo(), getaddrinfo() and getnameinfo() in the internal libirs library that does not consider /etc/hosts and /etc/nsswitch.conf to use irs_ prefix.
This prevents name conflicts which would result in overriding standard glibc functions used by libldap.
(bsc#972907)

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 Software Development Kit 12-SP1 :

zypper in -t patch SUSE-SLE-SDK-12-SP1-2016-1048=1

SUSE Linux Enterprise Server 12-SP1 :

zypper in -t patch SUSE-SLE-SERVER-12-SP1-2016-1048=1

SUSE Linux Enterprise Desktop 12-SP1 :

zypper in -t patch SUSE-SLE-DESKTOP-12-SP1-2016-1048=1

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

See Also

https://bugzilla.suse.com/show_bug.cgi?id=969820

https://bugzilla.suse.com/show_bug.cgi?id=972907

https://www.suse.com/security/cve/CVE-2016-2774/

http://www.nessus.org/u?1fecafdb

Plugin Details

Severity: Medium

ID: 93181

File Name: suse_SU-2016-1791-1.nasl

Version: 2.12

Type: local

Agent: unix

Published: 8/29/2016

Updated: 1/6/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:C

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:dhcp, p-cpe:/a:novell:suse_linux:dhcp-client, p-cpe:/a:novell:suse_linux:dhcp-client-debuginfo, p-cpe:/a:novell:suse_linux:dhcp-debuginfo, p-cpe:/a:novell:suse_linux:dhcp-debugsource, p-cpe:/a:novell:suse_linux:dhcp-relay, p-cpe:/a:novell:suse_linux:dhcp-relay-debuginfo, p-cpe:/a:novell:suse_linux:dhcp-server, p-cpe:/a:novell:suse_linux:dhcp-server-debuginfo, cpe:/o:novell:suse_linux:12

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/13/2016

Vulnerability Publication Date: 3/9/2016

Reference Information

CVE: CVE-2016-2774