The security updates of openvpn、tiff、undertow and Linux Kernel. Vulnerability Information DSA-3900-1 openvpn —Security Updates Security database details: Several issues were discovered in openvpn, a virtual private network application. CVE-2017-7479: It was discovered that openvpn did not properly handle the rollover of packet identifiers. This would allow an authenticated remote attacker to cause a denial-of-service via application crash. CVE-2017-7508: Guido Vranken discovered that openvpn did not properly handle specific malformed IPv6 packets. This would allow a remote attacker to cause a denial-of-service via application crash. CVE-2017-7520: Guido Vranken discovered that openvpn did not properly handle clients connecting to an HTTP proxy ...Read more