Security update for quagga SUSE Patch security@suse.de SUSE Security Team openSUSE-SU-2017:1201-1 Final 1 1 2017-05-08T10:48:31Z current 2017-05-08T10:48:31Z 2017-05-08T10:48:31Z cve-database/bin/generate-cvrf.pl 2017-02-24T01:00:00Z Security update for quagga 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. The CVRF data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0). Copyright SUSE LLC under the Creative Commons License 4.0 with Attribution (CC-BY-4.0) https://lists.opensuse.org/opensuse-updates/2017-05/msg00020.html E-Mail link for openSUSE-SU-2017:1201-1 https://www.suse.com/support/security/rating/ SUSE Security Ratings openSUSE Leap 42.1 quagga-0.99.24.1-17.1 quagga-devel-0.99.24.1-17.1 quagga-0.99.24.1-17.1 as a component of openSUSE Leap 42.1 quagga-devel-0.99.24.1-17.1 as a component of openSUSE Leap 42.1 All versions of Quagga, 0.93 through 1.1.0, are 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. Most distributions restrict the Quagga telnet interface to local access only by default. The Quagga telnet interface 'vty' input buffer grows automatically, without bound, so long as a newline is not entered. This allows an attacker to cause the Quagga daemon to allocate unbounded memory by sending very long strings without a newline. Eventually the daemon is terminated by the system, or the system itself runs out of memory. This is fixed in Quagga 1.1.1 and Free Range Routing (FRR) Protocol Suite 2017-01-10. CVE-2017-5495 openSUSE Leap 42.1:quagga-0.99.24.1-17.1 openSUSE Leap 42.1:quagga-devel-0.99.24.1-17.1 moderate 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P Please Install the update. https://lists.opensuse.org/opensuse-updates/2017-05/msg00020.html https://www.suse.com/security/cve/CVE-2017-5495.html CVE-2017-5495 https://bugzilla.suse.com/1021669 SUSE Bug 1021669