openSUSE Security Update : quagga (openSUSE-2017-547)

This script is Copyright (C) 2017 Tenable Network Security, Inc.

Synopsis :

The remote openSUSE host is missing a security update.

Description :

This update for quagga fixes the following issues :

This security issue was fixed :

- CVE-2017-5495: Quagga was vulnerable to an unbounded
memory allocation in the telnet 'vty' CLI, leading to a
Denial-of-Service of Quagga daemons, or even the entire
host. When Quagga daemons are configured with their
telnet CLI enabled, anyone who can connect to the TCP
ports can trigger this vulnerability, prior to
authentication (bsc#1021669).

These non-security issues were fixed :

- Disabled passwords in default zebra.conf config file,
causing to disable vty telnet interface by default. The
vty interface is available via 'vtysh' utility using pam
authentication to permit management access for root
without password (boo#1021669).

- Changed owner of /etc/quagga to quagga:quagga to permit
to manage quagga via vty interface.

- Added quagga.log and create and su statemets to
logrotate config, changed default zebra log file name
from quagga.log to zebra.log.

See also :

Solution :

Update the affected quagga packages.

Risk factor :

High / CVSS Base Score : 7.8

Family: SuSE Local Security Checks

Nessus Plugin ID: 100035 ()

Bugtraq ID:

CVE ID: CVE-2017-5495

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