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RHSA-2003:151: tcpdump security update

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RHSA-2003:151: tcpdump security update

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
03/31/2003
Created
07/25/2018
Added
10/28/2005
Modified
07/12/2017

Description

Updated tcpdump packages that fix an infinite loop vulnerability and drop privileges on startup are now available.

Tcpdump is a command-line tool for monitoring network traffic. A vulnerability exists in tcpdump before 3.7.2 and is related to an inability to handle unknown RADIUS attributes properly. This vulnerability allows remote attackers to cause a denial of service (infinite loop). The Red Hat tcpdump packages advertise that, by default, tcpdump will drop privileges 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 contain a patch correcting the RADIUS issue and are compiled so that by default tcpdump will drop privileges to the 'pcap' user.

Solution(s)

  • redhat-upgrade-arpwatch
  • redhat-upgrade-libpcap
  • redhat-upgrade-tcpdump

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