RHSA-2003:033

Vulnerability from csaf_redhat - Published: 2003-02-26 15:17 - Updated: 2025-11-21 17:25
Summary
Red Hat Security Advisory: tcpdump security update
Severity
Moderate
Notes
Topic: Updated tcpdump, libpcap, and arpwatch packages are available to fix an incorrect bounds check when decoding BGP packets and a possible denial of service.
Details: Tcpdump is a command-line tool for monitoring network traffic. The BGP decoding routines in tcpdump before version 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). If a UDP packet from a radius port contains 0 at the second byte tcpdump gets stuck in a loop that generating an infinite stream of "#0#0#0#0#0". This could be used as a denial of service. Users of tcpdump are advised to upgrade to these errata packages which contain patches to correct thes 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.
CVE-2002-1350

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).

Affected products
Product Identifier Version Remediation
Red Hat Enterprise Linux AS (Advanced Server) version 2.1
Red Hat / Red Hat Advanced Products
 cpe:/o:redhat:enterprise_linux:2.1::as —
Vendor Fix fix
Red Hat Linux Advanced Workstation 2.1
Red Hat / Red Hat Advanced Products
 cpe:/o:redhat:enterprise_linux:2.1::aw —
Vendor Fix fix
CVE-2003-0093

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.

Affected products
Fixed 2 products, the same list as for CVE-2002-1350
References
To clipboard 

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        "text": "Updated tcpdump, libpcap, and arpwatch packages are available to fix an\nincorrect bounds check when decoding BGP packets and a possible denial of\nservice.",
        "title": "Topic"
      },
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        "text": "Tcpdump is a command-line tool for monitoring network traffic. \n\nThe BGP decoding routines in tcpdump before version 3.6.2 used incorrect\nbounds checking when copying data, which allows remote attackers to cause a\ndenial of service and possibly execute arbitrary code (as the \u0027pcap\u0027 user).\n\nIf a UDP packet from a radius port contains 0 at the second byte tcpdump\ngets stuck in a loop that generating an infinite stream of \"#0#0#0#0#0\".\nThis could be used as a denial of service.\n\nUsers of tcpdump are advised to upgrade to these errata packages which\ncontain patches to correct thes issues.",
        "title": "Details"
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}



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