Gentoo Logo

TCPDump: Decoding routines Denial of Service vulnerability

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200505-06 / tcpdump
Release Date May 09, 2005
Latest Revision June 12, 2005: 02
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
net-analyzer/tcpdump < 3.8.3-r3 >= 3.8.3-r3 All supported architectures

Related bugreports: #90541, #95349

Synopsis

A flaw in the decoding of network packets renders TCPDump vulnerable to a remote Denial of Service attack.

2.  Impact Information

Background

TCPDump is a tool for network monitoring and data acquisition.

Description

TCPDump improperly handles and decodes ISIS (CAN-2005-1278), BGP (CAN-2005-1267, CAN-2005-1279), LDP (CAN-2005-1279) and RSVP (CAN-2005-1280) packets. TCPDump might loop endlessly after receiving malformed packets.

Impact

A malicious remote attacker can exploit the decoding issues for a Denial of Service attack by sending specially crafted packets, possibly causing TCPDump to loop endlessly.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All TCPDump users should upgrade to the latest available version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/tcpdump-3.8.3-r3"

4.  References



Print

Page updated May 09, 2005

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.

Copyright 2001-2014 Gentoo Foundation, Inc. Questions, Comments? Contact us.