Updated ethereal packages are available

Updated ethereal packages are available which fix several security problems.

Ethereal is a package designed for monitoring network traffic on your
system. Several security issues have been found in Ethereal:

Due to improper string and error handling in Ethereal's ASN.1 parser, it is
possible for a malformed SNMP or LDAP packet to cause a memory allocation
or buffer overrun error in Ethereal versions before 0.9.2 (CAN-2002-0013
CAN-2002-0012)

The ASN.1 parser in Ethereal 0.9.2 and earlier allows remote attackers to
cause a denial of service (crash) via a certain malformed packet, which
causes Ethereal to allocate memory incorrectly, possibly due to zero-length
fields. (CAN-2002-0353)

The SMB dissector in Ethereal prior to version 0.9.2 allows remote
attackers to cause a denial of service (crash) or execute arbitrary code
via malformed packets that cause Ethereal to dereference a NULL pointer.
(CAN-2002-0401)

A buffer overflow in X11 dissector in Ethereal before 0.9.3 allows
remote attackers to cause a denial of service (crash) and possibly
execute arbitrary code while Ethereal is parsing keysyms. (CAN-2002-0402)

The DNS dissector in Ethereal before 0.9.3 allows remote attackers to
cause a denial of service (CPU consumption) via a malformed packet
that causes Ethereal to enter an infinite loop. (CAN-2002-0403)

A vulnerability in GIOP dissector in Ethereal before 0.9.3 allows remote
attackers to cause a denial of service (memory consumption). (CAN-2002-0404)

Users of Ethereal should update to the errata packages containing Ethereal
version 0.9.4 which is not vulnerable to these issues.

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0012
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0013
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0353
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0401
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0402
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0403
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0404
http://www.ethereal.com/appnotes/enpa-sa-00001.html
http://www.ethereal.com/appnotes/enpa-sa-00003.html
http://www.ethereal.com/appnotes/enpa-sa-00004.html

asn1, buffer, crash, ethereal, overflow