cisco-sa-20150408-ntpd

Multiple Cisco products incorporate a version of the ntpd package. Versions of this package are affected by one or more vulnerabilities that could allow an unauthenticated, remote attacker to bypass authentication controls or to create a denial of service (DoS) condition. On April 7, 2015, NTP.org and US-CERT released a security advisory dealing with two issues regarding bypass of authentication controls. These vulnerabilities are referenced in this document as follows: CVE-2015-1798: NTP Authentication bypass vulnerability CVE-2015-1799: NTP Authentication doesn't protect symmetric associations against DoS attacks Cisco has released software updates that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available.