DenyHosts: Denial of service

DenyHosts: Denial of service A vulnerability in DenyHosts could allow a remote attacker to create a Denial of Service condition. denyhost 2014-06-25 2014-06-25 495130 remote 2.6-r9 2.6-r9

DenyHosts is a script intended to be run by Linux system administrators to help thwart SSH server attacks.

DenyHosts does not properly define the regular expressions used when parsing SSH authentication logs.

A remote attacker could possibly cause a Denial of Service condition via a crafted login name.

There is no known workaround at this time.

All DenyHost users should upgrade to the latest version:


      # emerge --sync
      # emerge --ask --oneshot --verbose ">=app-admin/denyhosts-2.6-r9"

CVE-2013-6890 BlueKnight Zlogene