Debian DSA-389-1 : ipmasq - insecure packet filtering rules

high Nessus Plugin ID 15226

Synopsis

The remote Debian host is missing a security-related update.

Description

ipmasq is a package which simplifies configuration of Linux IP masquerading, a form of network address translation which allows a number of hosts to share a single public IP address. Due to use of certain improper filtering rules, traffic arriving on the external interface addressed for an internal host would be forwarded, regardless of whether it was associated with an established connection. This vulnerability could be exploited by an attacker capable of forwarding IP traffic with an arbitrary destination address to the external interface of a system with ipmasq installed.

Solution

For the current stable distribution (woody) this problem has been fixed in version 3.5.10c.

We recommend that you update your ipmasq package.

Plugin Details

Severity: High

ID: 15226

File Name: debian_DSA-389.nasl

Version: 1.23

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 9/29/2004

Updated: 1/4/2021

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:ipmasq, cpe:/o:debian:debian_linux:3.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 9/20/2003

Vulnerability Publication Date: 8/20/2003

Reference Information

CVE: CVE-2003-0785

BID: 8664

DSA: 389

Detections

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