CVE-2002-0514

OpenBSD 3.0 PF with the return-rst rule is vulnerable. The RST packet’s TTL is set to 128, allowing remote attackers to infer whether a port is filtered by comparing TTL to the default. Affected component: PF rule handling in OpenBSD 3.0. Root cause: TTL manipulation in RST responses leads to dis...

CVE-2002-0514

PF in OpenBSD 3.0 with the return-rst rule sets the TTL to 128 in the RST packet, which allows remote attackers to determine if a port is being filtered because the TTL is different than the default TTL...

CVE-2001-0487

CVE-2001-0487 affects the AIX SNMP server (snmpd) and allows remote attackers to cause a denial of service by sending a RST during the TCP connection. The provided documents do not specify the exact vulnerable component version range, affected product family beyond “AIX SNMP server snmpd,” or any...

NIDS Evasion Options

This plugin configures Nessus for NIDS evasion see the 'Prefs' panel. NIDS evasion options are useful if you want to determine the quality of the expensive NIDS you just bought. TCP Evasion techniques : - Split : send data one byte at a time. This confuses NIDS which do not perform stream...

Проблема с CISCO PIX

CISCO PIX не проверяет номер последовательности sequence number TCP RST-пакета, что позволяет завершить любое TCP-соединение, зная только адреса IP и номера портов...

Security Vulnerability in IPFilter 3.3.15 and 3.4.3

Obfuscation Research Laboratories Security Advisory ORL-2000-05-19-01 IPFILTER FIREWALLS SYNOPSIS A weakness exists in the IPFilter firewalling package in all versions up to and including 3.3.15 and 3.4.3 that allows an attacker to penetrate the firewall when a common, yet admittedly flawed,...

Серьезная уязвимость в IPFilter

RST-пакет посланый при использовании правила block return-rst воспринимается как "отпирающий" если в дальнейшем используется правило типа keep state. Дальнейшие атаки на данный порт не будут блокироваться...

CVE-1999-0216

The CVE-1999-0216 entry concerns a Denial of Service of inetd on Linux triggered by SYN and RST packets. Connected documents consistently describe inetd on Linux as the affected component and the root cause as crafted TCP packets causing denial of service. Public details in the PT-1997-1097 entry...

CVE-1999-0053

TCP RST denial of service in FreeBSD...

CVE-1999-0053

The provided connected documents corroborate CVE-1999-0053 as a TCP RST denial-of-service affecting FreeBSD. Details in the sources are limited to the high‑level description and do not specify the exact vulnerable component, affected FreeBSD versions, root cause, or a remediation/patch. Exploitat...

sendmail-x.x.x-DoS.txt

Date: Sun, 6 Sep 1998 00:53:24 +0200 From: Michal Zalewski To: [email protected] Subject: Sendmail, lynx, Netscape, sshd, Linux kernel twice // greetings to kotka : // ...and everyone who could stand this post Hello boys and girls - probably everyone yearn after me : So I decided to publish so...

Linux Kernel 2.0 Sendmail - Denial of Service

Linux Kernel 2.0 Sendmail - Denial of Service / source: https://www.securityfocus.com/bid/363/info The 2.0.x kernels have a quirk in the TCP implementation that have to do with the accept call returning after only a syn has been recieved as opposed to the three way handshake having been completed...

Linux Kernel 2.0 Sendmail - Denial of Service

/ source: https://www.securityfocus.com/bid/363/info The 2.0.x kernels have a quirk in the TCP implementation that have to do with the accept call returning after only a syn has been recieved as opposed to the three way handshake having been completed. Sendmail, which is compiled on many unices,...

CVE-1999-0053

TCP RST denial of service in FreeBSD...

FreeBSD-SA-98:07.rst

-----BEGIN PGP SIGNED MESSAGE----- ============================================================================= FreeBSD-SA-98:07 Security Advisory FreeBSD, Inc. Topic: TCP RST denial of sevice Category: core Module: kernel Announced: 1998-10-13 Affects: FreeBSD 2.2. before 2.2.8R, FreeBSD-stable...

TCP denial-of-service attacks against long lived connections

NISCC / UNIRAS has published an advisory that re-visits the long discussed spoofed TCP RST denial-of-service vulnerability. This new look emphasizes the fact that for some applications such attacks are practically feasible...