openSUSE Security Update: Security update for quagga ______________________________________________________________________________ Announcement ID: openSUSE-SU-2017:1201-1 Rating: low References: #1021669 Cross-References: CVE-2017-5495 Affected Products: openSUSE Leap 42.1 ______________________________________________________________________________ An update that fixes one vulnerability is now available. 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. Patch Instructions: To install this openSUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product: - openSUSE Leap 42.1: zypper in -t patch openSUSE-2017-547=1 To bring your system up-to-date, use "zypper patch". Package List: - openSUSE Leap 42.1 (i586 x86_64): quagga-0.99.24.1-17.1 quagga-debuginfo-0.99.24.1-17.1 quagga-debugsource-0.99.24.1-17.1 quagga-devel-0.99.24.1-17.1 References: https://www.suse.com/security/cve/CVE-2017-5495.html https://bugzilla.suse.com/1021669