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check file permissions as authenticating user #107

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Commits on Jul 8, 2020

  1. check file permissions as authenticating user

    It's necessary to check permissions of authorized_keys file with the same euid
    as opening the file, otherwise the permissions check may fail even if the
    following fopen would succeed.  This can happen e.g. when user's directory
    is mounted from an NFS share with squashroot.
    cdragan committed Jul 8, 2020
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