CVE-2013-6890 - Vulnerability Details - OpenCVE

Description

denyhosts 2.6 uses an incorrect regular expression when analyzing authentication logs, which allows remote attackers to cause a denial of service (incorrect block of IP addresses) via crafted login names.

Published: 2013-12-23

Score: 5.0 Medium

EPSS: 11.0% 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 [-]

OR	cpe:2.3:o:debian:debian_linux:6.0:::::::*
	cpe:2.3:o:debian:debian_linux:7.0:::::::*
	cpe:2.3:o:debian:debian_linux:7.1:::::::*
	cpe:2.3:o:fedoraproject:fedora::::::::

Configuration 2 [-]

cpe:2.3:a:phil_schwartz:denyhosts:2.6:*:*:*:*:*:*:*

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-2826-1	denyhosts security update
Debian DSA	DSA-2826-2	denyhosts regression update

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.10971.

Key SSVC decision points have not yet been added.

References

Link	Providers
http://seclists.org/oss-sec/2013/q4/535
http://secunia.com/advisories/56239
http://www.debian.org/security/2013/dsa-2826
https://bugzilla.redhat.com/show_bug.cgi?id=1045982

History

No history.

Subscriptions

Debian Debian Linux

Fedoraproject Fedora

Phil Schwartz Denyhosts

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2013-12-23T22:00:00.000Z

Updated: 2024-08-06T17:53:44.689Z

Reserved: 2013-11-28T00:00:00.000Z

Link: CVE-2013-6890

Vulnrichment

No data.

NVD

Status : Modified

Published: 2013-12-23T22:55:03.050

Modified: 2026-04-29T01:13:23.040

Link: CVE-2013-6890

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-287

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