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Linux Mint Website Hacked, Users Tricked Into Downloading ISOs with Backdoors

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Just a few moments ago, Clement Lefebvre, leader of the Linux Mint project, informes users of the popular, Ubuntu-based distribution that the servers where the Linux Mint website is hosted have been hacked to point the download links to specially crafted ISOs.

According to Mr. Lefebvre, it appears that a group of hackers created a modified Linux Mint ISO, which included a backdoor. Then, they hacked into the Linux Mint website and modified the download links to trick users into downloading the malicious ISO image.

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More on the Story

  • Linux Mint hacked, ISO images compromised

    The Linux Mint team revealed today that compromised ISO images of Linux Mint have been distributed from the official website on February 20th, 2016.

  • Linux Mint website hacked, malicious ISO offered on Saturday

    In a surprising announcement, Clement Lefebvre -- head of the Linux Mint project -- said that the Linux Mint website had been compromised and that the hackers were able to edit the site to point to a malicious ISO of Linux Mint 17.3 Cinnamon edition on Saturday 20th, February.

    If you downloaded the Cinnamon edition prior to Saturday or downloaded a different version/flavour (including Mint 17.3 Cinnamon via torrent or direct HTTP link) you aren't affected. It's worth mentioning that since the issue was caught, everything has since returned back to normal now so it's safe to download the Linux Mint ISOs again.

  • Beware of hacked ISOs if you downloaded Linux Mint on February 20th!

    We were exposed to an intrusion today. It was brief and it shouldn’t impact many people, but if it impacts you, it’s very important you read the information below.

  • Linux Mint downloads (briefly) compromised

Latest on Linux Mint

Response and Lessons

  • All forums users should change their passwords.
  • Backdoored Linux Mint, and the Perils of Checksums

    Someone hacked the website of Linux Mint — which, according to Wikipedia’s traffic analysis report is the 3rd most popular desktop Linux distribution after Ubuntu and Fedora — and replaced links to ISO downloads with a backdoored version of the operating system. This blog post explains the situation.

    [...]

    Besides the fact that the website isn’t available over HTTPS so network attackers could change those MD5 checksums to whatever they want as you load the blog post, MD5 is entirely broken and has been for many years. MD5 should never be relied on for verifying that you have the legitimate version of a file. It would not be difficult for someone to generate a backdoored Linux Mint ISO that has the same MD5 checksum as the legitimate ISO. Likewise, while SHA1 is considerable stronger, it also should not be used for security purposes anymore. Wikipedia’s SHA1 article says: “SHA-1 is no longer considered secure against well-funded opponent.”

  • Lessons from the Linux Mint Hack

    Unless you’re completely unplugged from the Linux news media, by now you’ve heard about the exploit that affected both the Linux Mint WordPress site and the Linux Mint 17.3 Cinnamon edition.

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