Rlogin -froot command could allow remote root access

rlogin-froot (104) The risk level is classified as HighHigh Risk


A vulnerability in the rlogin daemon of some AIX and Linux systems could allow a remote attacker to gain unauthorized root access to the system. A remote attacker can specify the -froot option to rlogin to cause the server daemon to immediately drop the user into a root shell. This allows the attacker to log in as root without being prompted for a password.


Gain Access


For IBM AIX 3:
Apply APAR IX44254 patch, as listed in CERT Advisory CA-1994-09. See References.

As a workaround, disable rlogin in the /etc/inetd.conf file and restart the inetd process.


Platforms Affected:

  • Compaq Tru64
  • Data General DG/UX
  • HP HP-UX
  • Linux Kernel
  • SCO SCO Unix
  • Sun Solaris
  • Wind River BSDOS


May 01, 1994

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email ignore thisxforceignore this@ignore thisus.ignore thisibm.comignore this

Return to the main page