AIX frcactrl Insecure File Handling Vulnerability

BID:1152

Info

AIX frcactrl Insecure File Handling Vulnerability

Bugtraq ID: 1152
Class: Access Validation Error
CVE:
Remote: No
Local: Yes
Published: Apr 26 2000 12:00AM
Updated: Apr 26 2000 12:00AM
Credit: This vulnerability was announced in an ISS advisory on April 26, 2000.
Vulnerable: IBM AIX 4.3.2
IBM AIX 4.3.1
IBM AIX 4.3
Not Vulnerable:

Discussion

AIX frcactrl Insecure File Handling Vulnerability

A vulnerability exists in the frcactrl program, part of the Fast Response Cache Accelerator (FRCA) package, included with AIX 4.3 from IBM. The frcactrl program is shipped setuid root by IBM. If the FRCA kernel module is loaded, it is possible for local users to utilize the frcactrl program to modify files. In doing so, they can manipulate the configuration in such a way as to allow the modification, creation or overwriting of files as root. This in turn could lead to a compromise of the root account on the machine.

Exploit / POC

AIX frcactrl Insecure File Handling Vulnerability

Currently the SecurityFocus staff are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

Solution / Fix

AIX frcactrl Insecure File Handling Vulnerability

Solution:
Currently the SecurityFocus staff are not aware of any vendor supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected].

A suitable work around is to remove the setuid bit from the frcactrl program, and unload the FRCA kernel module:
# /usr/sbin/frcactrl unload ; /usr/sbin/slibclean
# chmod 555 /usr/sbin/frcactrl


IBM AIX 4.3

IBM AIX 4.3.1

IBM AIX 4.3.2

References

AIX frcactrl Insecure File Handling Vulnerability

References:
© CVE.report 2026 |

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. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report