IBM AIX fuser command denial of service

ibm-aix-fuser-dos (78907) The risk level is classified as LowLow Risk

Description:

IBM AIX is vulnerable to a denial of service, caused by improper restrictions on the fuser command. A local attacker could exploit this vulnerability via the -k argument to kill a process of another user.

*CVSS:

Base Score: 2.1
  Access Vector: Local
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 1.8
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Refer to the IBM Security Advisory for patch, upgrade or suggested workaround information. See References.

References:

  • IBM SECURITY ADVISORY: AIX fuser vulnerability.
  • BID-55726: IBM AIX CVE-2012-4833 Local Denial of Service Vulnerability
  • CVE-2012-4833: fuser in IBM AIX 6.1 and 7.1, and VIOS 2.2.1.4-FP-25 SP-02, does not properly restrict the -k option, which allows local users to kill arbitrary processes via a crafted command line.
  • OSVDB ID: 85869: IBM AIX fuser Command -k Argument Command Line Parsing Local Process DoS
  • SA50708: IBM AIX "fuser" Command Denial of Service

Platforms Affected:

  • IBM AIX 6.1
  • IBM AIX 7.1

Reported:

Sep 28, 2012

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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 IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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