openSUSE Security Update : quagga (openSUSE-2017-551)

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 to version 1.1.1 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.

- Added libfpm_pb0 and libquagga_pb0 shared library
sub-packages, adjusted libzebra0 sub-package name to
libzebra1.

- Do not enable zebra's tcp interface (port 2600) to use
default unix socket for communication between the
daemons

A digest of the other changes by the version upgrade :

- isisd: Fix size of malloc

- isisd: check for the existance of the correct list

- ospf6d: fix off-by-one on display of spf reasons

- ospf6d: don't access nexthops out of bounds

- bgpd: fix off-by-one in attribute flags handling

- bgpd: Fix buffer overflow error in bgp_dump_routes_func

Please
http://mirror.easyname.at/nongnu/quagga/quagga-1.1.1.changelog.txt and
the changelog for a complete list of changes.

See also :

http://mirror.easyname.at/nongnu/quagga/quagga-1.1.1.changelog.txt
https://bugzilla.opensuse.org/show_bug.cgi?id=1021669

Solution :

Update the affected quagga packages.

Risk factor :

High / CVSS Base Score : 7.8
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C)

Family: SuSE Local Security Checks

Nessus Plugin ID: 100037 ()

Bugtraq ID:

CVE ID: CVE-2017-5495

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