STORY

Finding the UUX Vulnerability and Emailing Dennis Ritchie

  • Finding the UUX Vulnerability and Emailing Dennis Ritchie

  • During my early career at Tektronix in Beaverton, Oregon, Tektronix operated one of the first ~30 nodes globally on Usenet and served as a vital regional routing hub for the UUCP network.
  • The Vulnerability Discovery

    • While working with Unix networking utilities, I discovered a critical remote code execution vulnerability in uux (Unix-to-Unix execution) that permitted arbitrary remote code execution on any connected host in the UUCP network.
  • Direct Coordination with Dennis Ritchie (dmr)

    • Rather than having to navigate corporate bureaucracy or PR channels, I reached out and exchanged email directly with Dennis Ritchie (dmr) at Bell Labs to report the vulnerability and coordinate the upstream patch for the Unix/UUCP codebase.
  • Historical Context: The 15-Minute Usenet Feed

    • In those early days, Tektronix was a crucial networking bridge in the Pacific Northwest connecting to early nodes like ucbvax and decvax.
    • The entire global Usenet feed could still be read in about 15 minutes a day over morning coffee.
    • It was the era right around the invention of the ASCII :-) smiley (1982) and the pioneering expansion of the global UUCP map.
These facts are as Randal recalls them, but much time has passed for most of this. If you find a factual error, please email realmerlyn@gmail.com.