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Debian DSA-198-1 : nullmailer - denial of service

low Nessus Plugin ID 15035

Synopsis

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

Description

A problem has been discovered in nullmailer, a simple relay-only mail transport agent for hosts that relay mail to a fixed set of smart relays. When a mail is to be delivered locally to a user that doesn't exist, nullmailer tries to deliver it, discovers a user unknown error and stops delivering. Unfortunately, it stops delivering entirely, not only this mail. Hence, it's very easy to craft a denial of service.

Solution

Upgrade the nullmailer package.

This problem has been fixed in version 1.00RC5-16.1woody2 for the current stable distribution (woody) and in version 1.00RC5-17 for the unstable distribution (sid). The old stable distribution (potato) does not contain a nullmailer package.

See Also

http://www.debian.org/security/2002/dsa-198

Plugin Details

Severity: Low

ID: 15035

File Name: debian_DSA-198.nasl

Version: 1.18

Type: local

Agent: unix

Published: 9/29/2004

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.8

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

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: No exploit is required

Patch Publication Date: 11/18/2002

Reference Information

CVE: CVE-2002-1313

BID: 6193

DSA: 198