IBM AIX rm_mlcache_file race condition file overwrite

aix-rm-mlcache-file-overwrite (25848) The risk level is classified as MediumMedium Risk

Description:

IBM AIX could allow a local attacker to overwrite arbitrary files on the system, caused by a race condition in the rm_mlcache_file command. An attacker could use this vulnerability to gain elevated privileges on the system.


Consequences:

File Manipulation

Remedy:

For AIX 5.3.0:
Apply APAR IY82357, available from the IBM Support and Downloads Web site. See References.

--OR--

Apply the temporary patch for this vulnerability (rm_mlcache_file_ifix.tar.Z), available from the IBM FTP site. See References.

References:

  • IBM FTP site: README.
  • IBM FTP site: Index of ftp://aix.software.ibm.com/aix/efixes/security/.
  • IBM Support & downloads: IY82357: SECURITY ISSUE IN BOS.RTE.INSTALL.
  • NSFOCUS Security Advisory (SA2006-03): IBM AIX rm_mlcache_file Local Race Condition Vulnerability.
  • BID-17576: IBM AIX RM_MLCache_File Insecure Temporary File Creation Vulnerability
  • CVE-2006-1247: rm_mlcache_file in bos.rte.install in AIX 5.1.0 through 5.3.0 allows local users to overwrite arbitrary files via a symlink attack on temporary files.
  • SA19656: IBM AIX rm_mlcache_file Arbitrary File Overwrite
  • SECTRACK ID: 1015952: IBM AIX rm_mlcache_file Command May Let Local Users Gain Elevated Privileges
  • VUPEN/ADV-2006-1389: IBM AIX rm_mlcache_file Command Unspecified Local File Overwrite Issue

Platforms Affected:

  • IBM AIX 5.1
  • IBM AIX 5.2
  • IBM AIX 5.3

Reported:

Apr 17, 2006

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