Debian DSA-2248-1 : ejabberd - denial of service

medium Nessus Plugin ID 55036

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Synopsis

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

Description

Wouter Coekaerts discovered that ejabberd, a distributed XMPP/Jabber server written in Erlang, is vulnerable to the so-called 'billion laughs' attack because it does not prevent entity expansion on received data. This allows an attacker to perform denial of service attacks against the service by sending specially crafted XML data to it.

Solution

Upgrade the ejabberd packages.

For the oldstable distribution (lenny), this problem has been fixed in version 2.0.1-6+lenny3.

For the stable distribution (squeeze), this problem has been fixed in version 2.1.5-3+squeeze1.

Plugin Details

Severity: Medium

ID: 55036

File Name: debian_DSA-2248.nasl

Version: 1.11

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 6/10/2011

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: Medium

Base Score: 5

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:ejabberd, cpe:/o:debian:debian_linux:5.0, cpe:/o:debian:debian_linux:6.0

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

Patch Publication Date: 3/31/2011

Reference Information

CVE: CVE-2011-1753

DSA: 2248

Detections

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