CVE-2006-0054

The ipfw firewall in FreeBSD 6.0-RELEASE allows remote attackers to cause a denial of service firewall crash via ICMP IP fragments that match a reset, reject or unreach action, which leads to an access of an uninitialized pointer...

PT-2006-1142 · Freebsd · Freebsd

Name of the Vulnerable Software and Affected Versions: FreeBSD version 6.0-RELEASE Description: The issue allows remote attackers to cause a denial of service, leading to a firewall crash. This is achieved through ICMP IP fragments that match a reset, reject, or unreach action, resulting in acces...

ipfw -- IP fragment denial of service

Problem description: The firewall maintains a pointer to layer 4 header information in the event that it needs to send a TCP reset or ICMP error message to discard packets. Due to incorrect handling of IP fragments, this pointer fails to get initialized. Impact: An attacker can cause the firewall...

CVE-2006-0054: Access of Uninitialized Pointer

The ipfw firewall in FreeBSD 6.0-RELEASE allows remote attackers to cause a denial of service firewall crash via ICMP IP fragments that match a reset, reject or unreach action, which leads to an access of an uninitialized pointer...

FreeBSD-SA-06:04.ipfw

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-06:04.ipfw Security Advisory The FreeBSD Project Topic: ipfw IP fragment denial of service Category: core Module: ipfw Announced: 2006-01-11 Credits: Oleg Bulyzhi...

CVE-2005-3848

Memory leak in the icmppushreply function in Linux 2.6 before 2.6.12.6 and 2.6.13 allows remote attackers to cause a denial of service memory consumption via a large number of crafted packets that cause the ipappenddata function to fail, aka "DST leak in icmppushreply."...

CVE-2005-3810

ipconntrackprotoicmp.c in ctnetlink in Linux kernel 2.6.14 up to 2.6.14.3 allows attackers to cause a denial of service kernel oops via a message without ICMP ID ICMPID information, which leads to a null dereference...

CVE-2005-3810

ipconntrackprotoicmp.c in ctnetlink in Linux kernel 2.6.14 up to 2.6.14.3 allows attackers to cause a denial of service kernel oops via a message without ICMP ID ICMPID information, which leads to a null dereference...

CVE-2005-3810

ipconntrackprotoicmp.c in ctnetlink in Linux kernel 2.6.14 up to 2.6.14.3 allows attackers to cause a denial of service kernel oops via a message without ICMP ID ICMPID information, which leads to a null dereference...

scan for LaBrea tarpitted hosts

This script performs a labrea tarpit scan, by sending a bogus ACK and ACK-windowprobe to a potential host. It also sends a TCP SYN to test for non-persisting labrea machines. SPDX-FileCopyrightText: 2001 by John Lampe Some text descriptions might be excerpted from a referenced sources, and are...

'jolt2' DoS Vulnerability - Active Check

The machine or a gateway on the network path crashed when flooded with incorrectly fragmented packets. This is known as the SPDX-FileCopyrightText: 2003 Michel Arboi Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders...

p-smash DoS (ICMP 9 flood)

It was possible to crash the remote machine by flooding it with ICMP type 9 packets. SPDX-FileCopyrightText: 2002 Michel Arboi Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only According ...

Linux SCTP ICMP Packet Handling Null Dereference Remote DoS

Linux kernels older than version 2.6.13 contain a bug that may allow an attacker to cause a NULL pointer dereference by sending malformed ICMP packets, thus resulting in a kernel panic. This flaw is present only if SCTP support is enabled on the remote host. An attacker can use this to make this...

ICMP and TCP timestamp attacks to reset TCP connections

By using different ICMP packet types and TCP timestamps values it's possible to cause TCP connection resets or performance decrease...

[Full-disclosure] ICMP attacks against TCP: Conclusions

Folks, My posts to this list have tried to show how easy it is to perform ICMP attacks against TCP. The attacks are blind, so the attacker does not need to be a "man in the middle" to perform then. The typical number of packets required to perform any of these attacks is about 16000 in many cases...

ICMP-based blind connection-reset attack

Folks, Here's the packet trace and the explanation of an ICMP-based blind connection-reset attack. In our sample scenario, a web-client 10.0.0.1, TCP port 3270 is downloading a file from a web-server 192.168.0.1, TCP port 80. If the TCP/IP implementations of both end-points are vulnerable,you can...

[SA16126] Blue Coat Products ICMP Message Handling Denial of Service

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[Full-disclosure] Trivial BGP attacks (ICMP-based blind throughput-reduction attack)

Folks, It seems worthless to try to explain over and over again how trivial it is to perform ICMP-based attacks against TCP. So I have posted on my web site http://www.gont.com.ar/tools/icmp-attacks the same tools that vendors were supposed to use to audit their systems, and test their patches...

[Full-disclosure] ICMP-based blind performance-degrading attack

Folks, Another trivial ICMP-based attack. We'll use the tool icmp-mtu, available at http://www.gont.com.ar/tools/icmp-attacks We'll perform the blind performance-degrading attack described in http://www.gont.com.ar/drafts/icmp-attacks-against-tcp.html as the "Attack against the Path-MTU Discovery...

HPSBTU01210 SSRT4743, SSRT4884 rev.0 - HP Tru64 UNIX TCP/IP remote Denial of Service (DoS)

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 HP SECURITY BULLETIN HPSBTU01210 REVISION: 0 SSRT4743, SSRT4884 rev.0 - HP Tru64 UNIX TCP/IP remote Denial of Service DoS NOTICE: There are no restrictions for distribution of this Security Bulletin provided that it remains complete and intact. The...