IM immknmz /tmp file symlink

im-immknmz-symlink (10767) The risk level is classified as MediumMedium Risk

Description:

The immknmz program in the IM package creates a temporary file in /tmp with an easily predictable file name, which could allow a local attacker to launch a symlink attack. A local attacker could create a symbolic link for a file in /tmp to any file on the system, which could allow the attacker to create or overwrite files with the privileges of another user, once the immknmz program is executed.

*CVSS:

Base Score: 2.9
  Access Vector: Local
  Access Complexity: High
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: Partial
  Availability Impact: Partial
 
Temporal Score: 2.5
  Exploitability: High
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

File Manipulation

Remedy:

For Debian GNU/Linux:
Upgrade to the latest im package, as listed below. Refer to DSA-202-2 for more information. See References.

Debian 2.2 (potato): 133-2.3 or later
Debian 3.0 (woody): 141-18.2 or later

For Red Hat Linux containing the im package:
Upgrade to the latest im package, as listed below. Refer to RHSA-2003:039-06 for more information. See References.

Red Hat 7.0 and 7.1: im-143-0.7x.560 or later
Red Hat 7.2: im-143-1 or later

For Red Hat Linux containing the mew package:
Upgrade to the latest mew package, as listed below. Refer to RHSA-2003:039-06 for more information. See References.

Red Hat 7.3: mew-2.2-5.7x or later
Red Hat 8.0: mew-2.2-6 or later

For other distributions:
Contact your vendor for upgrade or patch information.

References:

  • IM Web site: IM (Internet Message) Official Site.
  • BID-6307: Internet Message Insecure Temporary File Creation Vulnerability
  • CVE-2002-1395: Internet Message (IM) 141-18 and earlier uses predictable file and directory names, which allows local users to (1) obtain unauthorized directory permissions via a temporary directory used by impwagent, and (2) overwrite and create arbitrary files via immknmz.
  • DSA-202: im -- insecure temporary files
  • RHSA-2003-038: im security update
  • RHSA-2003-039: Updated im packages fix insecure handling of temporary files

Platforms Affected:

  • Debian Debian Linux 2.2
  • Debian Debian Linux 3.0
  • IM Developing Team IM
  • RedHat Enterprise Linux 2.1 WS
  • RedHat Enterprise Linux 2.1 ES
  • RedHat Enterprise Linux 2.1 AS
  • RedHat Linux 7
  • RedHat Linux 7.1
  • RedHat Linux 7.1 for iSeries
  • RedHat Linux 7.1 for pSeries
  • RedHat Linux 7.1 for zSeries
  • RedHat Linux 7.2
  • RedHat Linux 7.3
  • RedHat Linux 8.0
  • RedHat Linux Advanced Workstation 2.1 Itanium

Reported:

Dec 03, 2002

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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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