IRIX /usr/sbin/Mail

sgi-irix-reset (3164) The risk level is classified as MediumMedium Risk


A vulnerability in the usr/sbin/Mail in IRIX could allow an attacker logged onto to the system to view another user?s mail. This is caused by the failure of usr/sbin/Mail to reset its group ID to the group ID of the caller.


Gain Privileges


A fixed /usr/sbin/Mail binary has been made available for anonymous ftp from SGI.COM ([]). The correct binary can be found at: sgi/Mail/Mail under the ftp directory. Note that this binary must be installed with the same group (mail) and permissions (2755) as your existing 3.3 or 3.3.1 /usr/sbin/Mail.


  • CERT Advisory CA-1990-08: IRIX 3.3 & 3.31 /usr/sbin/Mail.
  • BID-13: IRIX /usr/sbin/Mail Vulnerability
  • CVE-1999-1554: /usr/sbin/Mail on SGI IRIX 3.3 and 3.3.1 does not properly set the group ID to the group ID of the user who started Mail, which allows local users to read the mail of other users.
  • OSVDB ID: 8567: IRIX /usr/sbin/Mail Arbitrary Mail Spool Access

Platforms Affected:

  • SGI IRIX 3.2
  • SGI IRIX 3.3
  • SGI IRIX 3.3.1
  • SGI IRIX 3.3.2
  • SGI IRIX 3.3.3


Oct 31, 1990

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