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  1. Commons Net
  2. NET-74

[net]Telnet option handlers subnegotiations does not handle 0xFF correctly

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Minor
    • Resolution: Not A Problem
    • Affects Version/s: None
    • Fix Version/s: 2.2
    • Component/s: Telnet
    • Labels:
      None
    • Environment:

      Operating System: other
      Platform: Other

    • Bugzilla Id:
      39071

      Description

      in accordance to RFC855: "Finally, if parameters in an option "subnegotiation"
      include a byte with a value of 255, it is necessary to double this byte in
      accordance the general TELNET rules."

      I've actually encontered this while implementing WindowSize option handler, but
      it seems that all the currently avilable handlers are vulnerable to this.

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            • Assignee:
              Unassigned
              Reporter:
              yuvalkashtan@gmail.com Yuval Kashtan
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              Dates

              • Created:
                Updated:
                Resolved: