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
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
There is no known workaround at this time.
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.