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NetBSD-SA2002-010
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A race condition in the pppd program
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May
be exploited to change the permissions
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of
an arbitrary file
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src/usr.sbin/pppd/pppd/tty.c
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if (fchmod(real_ttyfd, tty_mode) != 0) {
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/* XXX if devnam is a symlink, this
will
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change the link */
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chmod(devnam, tty_mode);
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