Rapid7 Vulnerability & Exploit Database

CESA-2003:033: tcpdump security update

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CESA-2003:033: tcpdump security update

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
12/23/2002
Created
07/25/2018
Added
03/12/2010
Modified
07/04/2017

Description

Updated tcpdump, libpcap, and arpwatch packages are available to fix an incorrect bounds check when decoding BGP packets and a possible denial of service.

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.

Solution(s)

  • centos-upgrade-arpwatch
  • centos-upgrade-libpcap
  • centos-upgrade-tcpdump

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