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Gentoo Linux Security Advisory GLSA 200505-06 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: TCPDump: Decoding routines Denial of Service vulnerability |
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Date: May 09, 2005 |
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Bugs: #90541 |
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ID: 200505-06 |
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Synopsis |
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======== |
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|
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A flaw in the decoding of network packets renders TCPDump vulnerable to |
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a remote Denial of Service attack. |
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Background |
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========== |
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|
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TCPDump is a tool for network monitoring and data acquisition. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 net-analyzer/tcpdump < 3.8.3-r2 >= 3.8.3-r2 |
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|
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Description |
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=========== |
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|
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TCPDump improperly handles and decodes ISIS, BGP, LDP (CAN-2005-1279) |
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and RSVP (CAN-2005-1280) packets. TCPDump might loop endlessly after |
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receiving malformed packets. |
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|
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Impact |
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====== |
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|
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A malicious remote attacker can exploit the decoding issues for a |
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Denial of Service attack by sending specially crafted packets, possibly |
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causing TCPDump to loop endlessly. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All TCPDump users should upgrade to the latest available version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=net-analyzer/tcpdump-3.8.3-r2" |
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|
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References |
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========== |
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[ 1 ] CAN-2005-1279 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2005-1279 |
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[ 2 ] CAN-2005-1280 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=2005-1280 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200505-06.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2005 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.0 |
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