CVE-2007-4321 - Vulnerability Details - OpenCVE

Description

fail2ban 0.8 and earlier does not properly parse sshd log files, which allows remote attackers to add arbitrary hosts to the /etc/hosts.deny file and cause a denial of service by adding arbitrary IP addresses to the sshd log file, as demonstrated by logging in via ssh with a client protocol version identification containing an IP address string, a different vector than CVE-2006-6302.

Published: 2007-08-14

Score: 6.8 Medium

EPSS: 12.1% Moderate

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:fail2ban:fail2ban:0.8:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
Debian DSA	DSA-1456-1	New fail2ban packages fix denial of service

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.12111.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://bugs.gentoo.org/show_bug.cgi?id=181214
http://osvdb.org/42484
http://secunia.com/advisories/23237
http://secunia.com/advisories/28374
http://security.gentoo.org/glsa/glsa-200707-13.xml
http://www.debian.org/security/2008/dsa-1456
http://www.ossec.net/en/attacking-loganalysis.html
http://www.securityfocus.com/bid/25117

History

No history.

Subscriptions

Fail2ban Fail2ban

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2007-08-14T00:00:00.000Z

Updated: 2024-08-07T14:53:55.834Z

Reserved: 2007-08-13T00:00:00.000Z

Link: CVE-2007-4321

Vulnrichment

No data.

NVD

Status : Modified

Published: 2007-08-14T00:17:00.000

Modified: 2026-04-23T00:35:47.467

Link: CVE-2007-4321

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

NVD-CWE-Other

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