Debian DSA-2708-1 : fail2ban - denial of service

medium Nessus Plugin ID 66906

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Synopsis

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

Description

Krzysztof Katowicz-Kowalewski discovered a vulnerability in Fail2ban, a log monitoring and system which can act on attack by preventing hosts to connect to specified services using the local firewall.

When using Fail2ban to monitor Apache logs, improper input validation in log parsing could enable a remote attacker to trigger an IP ban on arbitrary addresses, thus causing a denial of service.

Solution

Upgrade the fail2ban packages.

For the oldstable distribution (squeeze), this problem has been fixed in version 0.8.4-3+squeeze2.

For the stable distribution (wheezy), this problem has been fixed in version 0.8.6-3wheezy2.

Plugin Details

Severity: Medium

ID: 66906

File Name: debian_DSA-2708.nasl

Version: 1.9

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 6/17/2013

Updated: 1/11/2021

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

Temporal Score: 3.7

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:fail2ban, cpe:/o:debian:debian_linux:6.0, cpe:/o:debian:debian_linux:7.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/16/2013

Reference Information

CVE: CVE-2013-2178

BID: 60467

DSA: 2708

Detections

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