Detections
Analytics

Debian DSA-1456-1 : fail2ban - programming error

medium Nessus Plugin ID 29903

Synopsis

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

Description

Daniel B. Cid discovered that fail2ban, a tool to block IP addresses that cause login failures, is too liberal about parsing SSH log files, allowing an attacker to block any IP address.

Solution

Upgrade the fail2ban package.

The old stable distribution (sarge) doesn't contain fail2ban.

For the stable distribution (etch), this problem has been fixed in version 0.7.5-2etch1.

See Also

https://www.debian.org/security/2008/dsa-1456

Plugin Details

Severity: Medium

ID: 29903

File Name: debian_DSA-1456.nasl

Version: 1.13

Type: local

Agent: unix

Published: 1/10/2008

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:fail2ban, cpe:/o:debian:debian_linux:4.0

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

Patch Publication Date: 1/9/2008

Reference Information

CVE: CVE-2007-4321

DSA: 1456