RHSA-2003:214
Vulnerability from csaf_redhat - Published: 2003-06-30 16:10 - Updated: 2025-11-21 17:26Summary
Red Hat Security Advisory: : : : Updated tcpdump packages fix various vulnerabilities
Severity
Moderate
Notes
Topic: Updated tcpdump, libpcap, and arpwatch packages for iSeries and pSeries fix
various vulnerabilities.
Details: Tcpdump is a command-line tool for monitoring network traffic.
The Red Hat tcpdump packages advertise that by default tcpdump will drop
permissions to user 'pcap'. Due to a compilation error this did not
happen, and tcpdump would run as root unless the '-U' flag was specified.
Users of tcpdump are advised to upgrade to these errata packages, which
are compiled so that by default tcpdump will drop privileges to the
'pcap' user.
The BGP decoding routines in tcpdump before 3.6.2 used incorrect bounds
checking when copying data, which allows remote attackers to cause a denial
of service and possibly execute arbitrary code (as the 'pcap' user).
The RADIUS decoder in tcpdump 3.6.2 and earlier allows remote attackers to
cause a denial of service (crash) via an invalid RADIUS packet with a
header length field of 0. This causes tcpdump to generate data within an
infinite loop.
A vulnerability in tcpdump before 3.7.2 is related to an inability to
handle unknown RADIUS attributes properly, and allows remote attackers to
cause a denial of service (infinite loop).
The ISAKMP parser in tcpdump 3.6 through 3.7.1 allows remote attackers to
cause a denial of service (CPU consumption) via a malformed ISAKMP packet
to UDP port 500, causing tcpdump to enter an infinite loop.
Versions of tcpdump up to and including 3.6.2 have a buffer overflow that
can be triggered when tracing the network by a bad NFS packet. This issue
was found by David Woodhouse of Red Hat.
Users of tcpdump are advised to upgrade to these errata packages, which
contain patches to correct these issues.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
Buffer overflow in tcpdump 3.6.2 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via an NFS packet.
Vendor Fix
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
Please note that this update is available via Red Hat Network. 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.
https://access.redhat.com/errata/RHSA-2003:214
The BGP decoding routines in tcpdump 3.6.x before 3.7 do not properly copy data, which allows remote attackers to cause a denial of service (application crash).
Vendor Fix
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
Please note that this update is available via Red Hat Network. 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.
https://access.redhat.com/errata/RHSA-2003:214
The RADIUS decoder in tcpdump 3.6.2 and earlier allows remote attackers to cause a denial of service (crash) via an invalid RADIUS packet with a header length field of 0, which causes tcpdump to generate data within an infinite loop.
Vendor Fix
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
Please note that this update is available via Red Hat Network. 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.
https://access.redhat.com/errata/RHSA-2003:214
isakmp_sub_print in tcpdump 3.6 through 3.7.1 allows remote attackers to cause a denial of service (CPU consumption) via a certain malformed ISAKMP packet to UDP port 500, which causes tcpdump to enter an infinite loop.
Vendor Fix
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
Please note that this update is available via Red Hat Network. 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.
https://access.redhat.com/errata/RHSA-2003:214
Unknown vulnerability in tcpdump before 3.7.2 related to an inability to "Handle unknown RADIUS attributes properly," allows remote attackers to cause a denial of service (infinite loop), a different vulnerability than CAN-2003-0093.
Vendor Fix
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
Please note that this update is available via Red Hat Network. 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.
https://access.redhat.com/errata/RHSA-2003:214
tcpdump does not properly drop privileges to the pcap user when starting up.
Vendor Fix
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
Please note that this update is available via Red Hat Network. 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.
https://access.redhat.com/errata/RHSA-2003:214
References
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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