known_hosts vulnerability?

From: Gabriel M. Elder (
Date: 05/18/05

  • Next message: Damien Miller: "Re: known_hosts vulnerability?"
    Date: Wed, 18 May 2005 14:30:38 -0500

    Hey all,

    I came across a security news article, referenced by, at

    talking about an SSH weakness involving the known_hosts file. I
    apologize if this issue has already been addressed, but the mailing list
    archives didn't turn up anything when i tried searching for something
    relevant. So; not to knee-jerk or anything, but is anyone currently
    looking into this? Does this need to be addressed, or has it already
    been taken care of? Offhand, on a scale of 0 - 11, this would seem to
    rate kinda high, ~7. Am i off-base?

    >From the article: "a known_hosts hashing scheme proposed by MIT has been
    implemented in OpenSSH 4.0 and in a patch for earlier versions of SSH".
    Looking at my own ~/.ssh/known_hosts file, the entries appear to be
    encrypted, by default; i assume this is a Good Thing. Installed ssh
    package = openssh-server-3.9p1-8.0.1. Shall i now resume my warm fuzzies
    and assume all is snug and secure in openssh-land?

  • Next message: Damien Miller: "Re: known_hosts vulnerability?"

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