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Unrated severityNVD Advisory· Published Dec 23, 2013· Updated Jun 17, 2026

CVE-2013-6890

CVE-2013-6890

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

6
  • Denyhosts/Denyhosts2 versions
    cpe:2.3:a:phil_schwartz:denyhosts:2.6:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:phil_schwartz:denyhosts:2.6:*:*:*:*:*:*:*
    • (no CPE)range: =2.6
  • Debian/linux3 versions
    cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:*+ 2 more
    • 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:*:*:*:*:*:*:*
  • Fedoraproject/Fedora
    cpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

4

News mentions

0

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