SGI LOCKOUT function allows file creation and corruption
| sgi-lockout (557) |  Medium Risk |
Description:
The LOCKOUT functionality of the IRIX login(1) program contains a vulnerability that allows files to be created or corrupted if the value of the LOCKOUT variable is greater than zero.
Consequences:
File Manipulation
Remedy:
Disable the LOCKOUT functionality by placing a '#' character in front of the line beginning with "LOCKOUT" in the '/etc/default/login' file.
— AND —
Apply the appropriate patch for your system, as listed in SGI Security Advisory, September 15, 1997. See References.
If you are running another version of IRIX it is suggested you upgrade to a supported version and then apply the patches listed in the SGI Security Advisory.
References:
- AusCERT Advisory AA-97.12: SGI IRIX login LOCKOUT parameter Vulnerability.
- CERT Advisory CA-1997-15: Vulnerability in SGI login LOCKOUT.
- CIAC Information Bulletin H-106: SGI IRIX LOCKOUT & login/scheme Vulnerabilities.
- SGI Security Advisory 19970508-02-PX: IRIX LOCKOUT and login/scheme Buffer Overrun.
- BID-392: IRIX login Vulnerability
- CVE-1999-0036: IRIX login program with a nonzero LOCKOUT parameter allows creation or damage to files.
- OSVDB ID: 990: IRIX login Non-zero LOCKOUT Arbitrary File Modification
Platforms Affected:
- SGI IRIX 5.0
- SGI IRIX 5.0.1
- SGI IRIX 5.1
- SGI IRIX 5.1.1
- SGI IRIX 5.2
- SGI IRIX 5.3 XFS
- SGI IRIX 5.3
- SGI IRIX 6.0
- SGI IRIX 6.0.1
- SGI IRIX 6.1
- SGI IRIX 6.2
- SGI IRIX 6.3
- SGI IRIX 6.4
Reported:
Sep 01, 1997
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 xforce@iss.net