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             AUSCERT External Security Bulletin Redistribution

                 ESB-2002.176 -- OpenBSD Security Advisory
                Potential localhost root compromise in mail
                               12 April 2002

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                mail
Vendor:                 OpenBSD
Operating System:       OpenBSD 3.0
                        OpenBSD 2.9
Impact:                 Root Compromise

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OpenBSD 3.0 and 2.9 contain a potential localhost root compromise,
found by Milos Urbanek.  Earlier versions of OpenBSD are not affected.

The mail(1) program will process tilde escapes even when it is not
in interactive mode.  Since mail(1) is called by the default cron(8)
jobs, this can lead to a localhost root compromise.

Patch for OpenBSD 3.0:
    ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.0/common/018_mail.patch

Patch for OpenBSD 2.9:
    ftp://ftp.openbsd.org/pub/OpenBSD/patches/2.9/common/023_mail.patch

The 3.0-stable and 2.9-stable branches will be updated with this
patch later today.

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