CVE-2013-6890

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
5 UNKNOWN
NETWORK
LOW
AV:N/AC:L/Au:N/C:N/I:N/A:P
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 93%
VendorProductVersion
debiandebian_linux
6.0
debiandebian_linux
7.0
debiandebian_linux
7.1
fedoraprojectfedora
*
phil_schwartzdenyhosts
2.6
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
denyhosts
vivid
dne
utopic
dne
trusty
dne
precise
Fixed 2.6-10+deb7u3build0.12.04.1
released
lucid
ignored
Common Weakness Enumeration
References
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
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