CVE-2007-4321

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Published Aug 14, 2007 CVSS 2.0 · 6.8 Medium EPSS 5.7% KEV · Not listed

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.

Affected Products

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 solution or workaround provided in the CVE record

Tracking

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Advisories

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

Metrics

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.

Exploit prediction score: 5.7% (5.748% probability within 30 days)

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

Weaknesses

NVD-CWE-Other

Sources

CVE record Updated: Aug 7, 2024, 2:53 PM

Status: PUBLISHED
Assigner: mitre
Published: Aug 14, 2007, 12:00 AM
Updated: Aug 7, 2024, 2:53 PM
Reserved: Aug 13, 2007, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 16, 2026, 10:43 PM

Status: Modified
Published: Aug 14, 2007, 12:17 AM
Modified: Jun 16, 2026, 10:43 PM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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