OpenBSD 3 .0 -- Bug in rshd(8) and rexecd(8)

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             AUSCERT External Security Bulletin Redistribution

                        ESB-2002.174 -- OpenBSD 3.0
                       Bug in rshd(8) and rexecd(8)
                               12 April 2002

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

Product:                rshd
                        rexecd
Vendor:                 OpenBSD
Operating System:       OpenBSD 3.0
Impact:                 Execute Arbitrary Code/Commands
Access Required:        Remote

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Under certain conditions, on systems using YP with netgroups in the
password database, it is possible for the rshd(8) and rexecd(8)
daemons to execute the shell from a different user's password entry.
Due to a similar problem, atrun(8) may change to the wrong home
directory when running at(1) jobs.

This only affects OpenBSD 3.0.  Prior versions of OpenBSD are not
affected.  The following patch has been in the 3.0-stable branch
for some time:
    ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.0/common/016_approval.patch

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