mhc-utils adb2mhc creates an insecure temporary directory

mhc-adb2mhc-insecure-tmp (11439) The risk level is classified as MediumMedium Risk

Description:

The adb2mhc utility in the mhc-utils (Message Harmonized Calendaring system utilities) package included with Debian Linux creates a temporary directory with an easily guessable name. This could allow a local attacker to overwrite arbitrary files on the system with privileges of the adb2mhc process owner.


Consequences:

File Manipulation

Remedy:

For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest mhc-utils package (0.25+20010625-7.1 or later), as listed in DSA 256-1. See References.

References:

  • DSA 256-1: mhc -- insecure temporary file.
  • BID-6978: mhc-utils Insecure Temporary File Creation Vulnerability
  • CVE-2003-0120: adb2mhc in the mhc-utils package before 0.25+20010625-7.1 allows local users to overwrite arbitrary files via a symlink attack on a default temporary directory with a predictable name.
  • DSA-256: mhc -- insecure temporary file
  • OSVDB ID: 12497: mhc-utils adb2mhc Symlink Arbitrary File Overwrite

Platforms Affected:

  • Debian Debian Linux 3.0
  • Quickhat.net mhc-utils

Reported:

Feb 28, 2003

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