SECURITY

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              AUSCERT External Security Bulletin Redistribution

                             
                    ESB-98.082 -- Red Hat Linux Bulletin
              SECURITY: xosview, bootp, metamail, dhcpcd fixes
                                04 June 1998

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RedHat Software, Inc. has released the following advisory concerning
numerous security problems found in Red Hat Linux versions 4.2 and 5.1. 

The following security bulletin is provided as a service to AusCERT's
members.  As AusCERT did not write this document, AusCERT has had no
control over its content.  As such, the decision to use any or all of this
information is the responsibility of each user or organisation, and should
be done so in accordance with site policies and procedures.

NOTE: This is only the original release of the security bulletin.  It will
not be updated when the original bulletin is.  If downloading at a later
date, it is recommended that the bulletin is retrieved from the original
authors to ensure that the information is still current.

If you have any questions or need further information, please contact 
Red Hat Software directly.

Previous advisories and external security bulletins can be retrieved from:

	http://www.auscert.org.au/Information/advisories.html

If you believe that your system has been compromised, contact AusCERT or
your representative in FIRST (Forum of Incident Response and Security
Teams).

Internet Email: auscert@auscert.org.au
Facsimile:	(07) 3365 7031
Telephone:	(07) 3365 4417 (International: +61 7 3365 4417)
		AusCERT personnel answer during Queensland business hours
		which are GMT+10:00 (AEST).
		On call after hours for emergencies.


Please Note: The following is extract from the original posting made by 
Redhat Software Inc:

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Numerous security problems in Red Hat have been found, and the Linux Expo
excitement has caused some delays in getting things out. Here's the first
set though -- expect more soon :-(

Note that Red Hat 5.0 and Red Hat 5.1 share all of these fixes, but we'll
but them in both the 5.0 and 5.1 update directories for the time being. As
users migrate to 5.1, we'll stop doing this. However, the 5.0 Errata will
be maintained for quite some time.

xosview in Red Hat 5.1 was unintentionally made setuid, which is not a
terribly good idea. Users of Red Hat 5.1 should upgrade to the new
xosview package immediately. Red Hat 5.0 users can upgrade if they like,
it won't hurt anything.

The versions of bootp, metamail, and dhcpcd distributed with Red Hat 4.2,
5.0, and 5.1 all have security problems. Users of any Red Hat distribution
should upgrade their versions of these programs immediately. If you are using
dhcpcd on your system, you must restart it before the fix will take effect.
The easiest way of restarting it is to reboot, the next easiest is to run
the following command after upgrading the pacakage:

/etc/rc.d/init.d/network stop; /etc/rc.d/init.d/network start

If you don't understand that bit of magic, just reboot instead. ;-)

A *huge* thanks goes out to Chris Evans for finding all of these problems,
plus some we haven't fixed yet (fixes will be forthcoming). Again, sorry
for the recent delays in getting these problems fixed.

Erik

Red Hat 5.0 and 5.1
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i386:
rpm -Uvh ftp://ftp.redhat.com/updates/5.1/i386/xosview-1.5.1-4.i386.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/5.1/i386/bootp-2.4.3-7.i386.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/5.1/i386/metamail-2.7-13.i386.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/5.1/i386/dhcpcd-0.65-3.i386.rpm

alpha:
rpm -Uvh ftp://ftp.redhat.com/updates/5.1/alpha/xosview-1.5.1-4.alpha.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/5.1/alpha/bootp-2.4.3-7.alpha.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/5.1/alpha/metamail-2.7-13.alpha.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/5.1/alpha/dhcpcd-0.65-3.alpha.rpm

Red Hat 4.2
- -----------

i386:
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/i386/bootp-2.4.3-2.1.i386.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/i386/metamail-2.7-7.3.i386.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/i386/dhcpcd-0.65-0.i386.rpm

alpha:
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/alpha/bootp-2.4.3-2.1.alpha.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/alpha/metamail-2.7-7.3.alpha.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/alpha/dhcpcd-0.65-0.alpha.rpm

SPARC:
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/sparc/bootp-2.4.3-2.1.sparc.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/sparc/metamail-2.7-7.3.sparc.rpm
rpm -Uvh ftp://ftp.redhat.com/updates/4.2/sparc/dhcpcd-0.65-0.sparc.rpm

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