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Family: Gentoo Local Security Checks --> Category: infos
[GLSA-200701-01] DenyHosts: Denial of Service Vulnerability Scan
Vulnerability Scan Summary
DenyHosts: Denial of Service
Detailed Explanation for this Vulnerability Test
The remote host is affected by the vulnerability described in GLSA-200701-01
(DenyHosts: Denial of Service)
Tavis Ormandy of the Gentoo Linux Security Audit Team discovered that
DenyHosts used an incomplete regular expression to parse failed login
attempts.
Impact
A remote unauthenticated attacker can add arbitrary hosts to the
blacklist by attempting to login with a specially crafted username. An
attacker may use this to prevent legitimate users from accessing a host
remotely.
Workaround
There is no known workaround at this time.
References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-6301
Solution:
All DenyHosts users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-admin/denyhosts-2.6"
Threat Level: Medium
Click HERE for more information and discussions on this network vulnerability scan.
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