Patch: OpenBSD 3.0 YP with netgroups

According to an alert from Todd Miller, under certain conditions, on systems using YP with netgroups in the password database, it is possible for the rshd and rexecd daemons to execute the shell from a different user's password entry. Due to a similar problem, atrun may change to the wrong home directory when running at jobs. Only Version 3.0 is affected. A patch is available from ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.0/common/016_approval.patch

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