-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 - ------------------------------------------------------------------------- Debian Security Advisory DSA-3900-1 security@xxxxxxxxxx https://www.debian.org/security/ Sebastien Delafond June 27, 2017 https://www.debian.org/security/faq - ------------------------------------------------------------------------- Package : openvpn CVE ID : CVE-2017-7479 CVE-2017-7508 CVE-2017-7520 CVE-2017-7521 Debian Bug : 865480 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 with NTLMv2 authentication. This would allow a remote attacker to cause a denial-of-service via application crash, or potentially leak sensitive information like the user's proxy password. CVE-2017-7521 Guido Vranken discovered that openvpn did not properly handle some x509 extensions. This would allow a remote attacker to cause a denial-of-service via application crash. For the oldstable distribution (jessie), these problems have been fixed in version 2.3.4-5+deb8u2. For the stable distribution (stretch), these problems have been fixed in version 2.4.0-6+deb9u1. For the testing distribution (buster), these problems have been fixed in version 2.4.3-1. For the unstable distribution (sid), these problems have been fixed in version 2.4.3-1. We recommend that you upgrade your openvpn packages. Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@xxxxxxxxxxxxxxxx -----BEGIN PGP SIGNATURE----- iQEzBAEBCgAdFiEEAqSkbVtrXP4xJMh3EL6Jg/PVnWQFAllStd0ACgkQEL6Jg/PV nWRU9wf/dfBa7UxecYqbJDJukRYIhSTD43y7cu8UweGHiXtyRiMFasxOvJBeu9Pc oDg9NnJ5fkEtUQuv7cElr5eMg9sHV/nJ2QYGuVT+8tesJmIPXji7n+ZGZAdia6Kf U8Ach9xBHaK5Ao+/AhsYRj6fTnBD/uZryt3cS8Z22x6Iku3iJx1m/n0fBOT5mK6l tK1wmD8nALl3RcS8ERYFAdeDQfKJ6tCyfYyddovy9kCd1NccDKbdx7/07MKUzfZo VsojNsD6PTCyaUQNl7OaG3EkyPfYDsPGG0UrklSadzxSFD8ynFcjbGr5LmXPhBZ1 zoNdMXDi4M3jPJB6IyVsUW/7u3gBvA== =Cuk2 -----END PGP SIGNATURE-----
