MGASA-2014-0541

Updated ntp packages fix security vulnerabilities:

If no authentication key is defined in the ntp.conf file, a cryptographically-weak default key is generated (CVE-2014-9293).

ntp-keygen before 4.2.7p230 uses a non-cryptographic random number generator with a weak seed to generate symmetric keys (CVE-2014-9294).

A remote unauthenticated attacker may craft special packets that trigger buffer overflows in the ntpd functions cryptorecv() (when using autokey authentication), ctlputdata(), and configure(). The resulting buffer overflows may be exploited to allow arbitrary malicious code to be executed with the privilege of the ntpd process (CVE-2014-9295).

A section of code in ntpd handling a rare error is missing a return statement, therefore processing did not stop when the error was encountered. This situation may be exploitable by an attacker (CVE-2014-9296).

The ntp package has been patched to fix these issues.