SSH .rhosts or .shosts weak authentication

sshd-rhosts (315) The risk level is classified as MediumMedium Risk

Description:

The SSH (Secure Shell) server on this computer supports Berkeley .rhosts or .shosts style authentication. This form of authentication relies on trusted host names and is defeatable by DNS (Domain Name System) cache poisoning and IP spoofing.

Platforms Affected:

  • Apple, Mac OS
  • Cisco, IOS
  • Compaq, Tru64
  • Data General, DG/UX
  • HP, HP-UX
  • IBM, AIX
  • IBM, OS2
  • Linux, Kernel
  • Microsoft, Windows 2000
  • Microsoft, Windows 2003 Server
  • Microsoft, Windows 95
  • Microsoft, Windows 98
  • Microsoft, Windows 98SE
  • Microsoft, Windows Me
  • Microsoft, Windows NT 4.0
  • Microsoft, Windows XP
  • Novell, NetWare
  • SCO, SCO Unix
  • SGI, IRIX
  • Sun, Solaris
  • WindRiver, BSDOS

Remedy:

If SSH is already installed, disable .rhosts authentication and use only RSA and RHOSTS-RSA.

Consequences:

Bypass Security

References:

  • CVE-1999-0547: An SSH server allows authentication through the .rhosts file.

Reported:

Not available

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