CVE-2007-5715

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2007-10-30 · updated 2026-06-16
Weakness: CWE-16

Description

DenyHosts 2.6 processes OpenSSH sshd "not listed in AllowUsers" log messages with an incorrect regular expression that does not match an IP address, which might allow remote attackers to avoid detection and blocking when making invalid login attempts with a username not present in AllowUsers, as demonstrated by the root username, a different vulnerability than CVE-2007-4323.

Affected products

Denyhosts: 2.6

References

http://bugs.gentoo.org/show_bug.cgi?id=181213
http://osvdb.org/45298
https://bugzilla.redhat.com/show_bug.cgi?id=237449
http://bugs.gentoo.org/show_bug.cgi?id=181213
http://osvdb.org/45298
https://bugzilla.redhat.com/show_bug.cgi?id=237449

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