** Also affects: cloud-init (Ubuntu Xenial) Importance: Undecided Status: New
** Also affects: cloud-init (Ubuntu Zesty) Importance: Undecided Status: New ** Changed in: cloud-init (Ubuntu Xenial) Status: New => Confirmed ** Changed in: cloud-init (Ubuntu Zesty) Status: New => Confirmed ** Changed in: cloud-init (Ubuntu Xenial) Importance: Undecided => Medium ** Changed in: cloud-init (Ubuntu Zesty) Importance: Undecided => Low ** Changed in: cloud-init (Ubuntu Xenial) Importance: Medium => Low -- You received this bug notification because you are a member of Yahoo! Engineering Team, which is subscribed to cloud-init. https://bugs.launchpad.net/bugs/1088611 Title: using random hostnames to detect dns proxies allows for false positives Status in cloud-init: Fix Committed Status in cloud-init package in Ubuntu: Fix Released Status in cloud-init source package in Xenial: Confirmed Status in cloud-init source package in Zesty: Confirmed Bug description: The fix that's been applied for bug #974509 checks for the presence of a redirector by looking of three hostnames, and treating as invalid any results pointing to a matching address: - does-not-exist.example.com. - example.invalid. - a random, unqualified 32-character alphanumeric hostname. The last of these carries a small but non-zero risk of colliding with a real hostname, and there's a small but non-zero risk that this host points to the same address as something we care about. If possible, it would be better to not include this random-host lookup in the algorithm, as somewhere, some day, chances are there will eventually be a collision, causing an incomprehensible and unreproducible failure for a user. To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1088611/+subscriptions -- Mailing list: https://launchpad.net/~yahoo-eng-team Post to : yahoo-eng-team@lists.launchpad.net Unsubscribe : https://launchpad.net/~yahoo-eng-team More help : https://help.launchpad.net/ListHelp