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.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-2826-1 denyhosts security update
Debian DSA Debian DSA DSA-2826-2 denyhosts regression update
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

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

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

Link: CVE-2013-6890

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

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

Modified: 2025-04-11T00:51:21.963

Link: CVE-2013-6890

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses