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RedHat updates for tcpdump
Secunia Advisory: SA8170
Release Date: 2003-02-27
Popularity: 6,228 views

Critical:
Moderately critical
Impact: DoS
System access
Where: From remote
Solution Status: Vendor Patch

OS:Red Hat Enterprise Linux AS 2.1
Red Hat Enterprise Linux WS 2.1

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
RedHat has issued updated tcpdump packages. These fix two vulnerabilities, which can be exploited to cause a DoS (Denial of Service) or compromise a system.

1) When tcpdump sees a UDP packet originating from a radius port, it will try to decode the packet. If the packet contains a zero ("0") at the second byte, which is the length field of a radius header, tcpdump enters a loop generating an infinate stream of "#0#0#0#0#0". This can result in a DoS if the output is written to a file, since available space on the harddisk is consumed.

2) A boundary error identified in the BGP decoding routines can be exploited to cause a DoS or possibly execute arbitrary code on the system with the privileges of the user "pcap".

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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