There would be a much lower risk if HTTP (without TLS) were not still the default for repositories.
This can actually also be abused by a MitM, he can always make your APT think that there are no new updates (a simple 304 Not Modified works), and then exploit recent vulnerabilities of which you have not received the fix. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1812353 Title: content injection in http method (CVE-2019-3462) Status in apt package in Ubuntu: In Progress Status in apt source package in Precise: New Status in apt source package in Trusty: Fix Released Status in apt source package in Xenial: Fix Released Status in apt source package in Bionic: Fix Released Status in apt source package in Cosmic: Fix Released Status in apt source package in Disco: In Progress Bug description: apt, starting with version 0.8.15, decodes target URLs of redirects, but does not check them for newlines, allowing MiTM attackers (or repository mirrors) to inject arbitrary headers into the result returned to the main process. If the URL embeds hashes of the supposed file, it can thus be used to disable any validation of the downloaded file, as the fake hashes will be prepended in front of the right hashes. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1812353/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
