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Notices by Patrick Figel 🐣 (pfigel@mastodon.at)

  1. Patrick Figel 🐣 (pfigel@mastodon.at)'s status on Monday, 16-Apr-2018 15:14:31 EDT Patrick Figel 🐣 Patrick Figel 🐣

    Oh for fuck's sake, OpenSSL. Just when I was starting to think they'd finally gotten their shit together

    In conversation Monday, 16-Apr-2018 15:14:31 EDT from mastodon.at permalink
  2. Patrick Figel 🐣 (pfigel@mastodon.at)'s status on Monday, 04-Dec-2017 05:37:33 EST Patrick Figel 🐣 Patrick Figel 🐣

    I wrote a thing on setting up nsjail to sandbox Mastodon's ImageMagick usage: https://offbyinfinity.com/2017/12/sandboxing-imagemagick-with-nsjail/

    In conversation Monday, 04-Dec-2017 05:37:33 EST from mastodon.at permalink

    Attachments

    1. File without filename could not get a thumbnail source.
      Sandboxing ImageMagick with nsjail
      from Off by Infinity
      ImageMagick is the go-to image conversion library in many environments. It’s written in C and doesn’t have the best track record on security. Last year, a major vulnerability called ImageTragick (yes, there’s a logo) made the news. Even Facebook turned out to be vulnerable. While secure alternatives exist, many existing projects have a hard dependency on ImageMagick and abstracting the image conversion can be quite involved. If you find yourself in a situation where you can’t avoid using ImageMagick, sandboxing can help you mitigate the damage in the event of a compromise.
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