Researchers at the Qualys Threat Research Unit (TRU) have unearthed discovered a critical security flaw in OpenSSH's server (sshd) in glibc-based Linux systems.
  • lurklurk@lemmy.world
    271·
    5 months ago

    the in depth technical details

    TL;DR; sigalarm handler calls syslog which isn’t safe to call from a signal handler context.

    Their example exploit needed about 10k attempts to get a remote shell so it’s not fast or quiet, but a neat find regardless

    • bitfucker@programming.dev
      5·
      5 months ago

      I can already imagine the log generated will be a hint. We usually automate those anyway as it is closer to (D)DoS too.