Apache Tomcat URL appended with a null character could list directories

tomcat-null-directory-listing (11194) The risk level is classified as MediumMedium Risk


Apache Tomcat could allow a remote attacker to obtain sensitive information. If a remote attacker sends a URL request to the Web server appended with a null byte character, the Web server would return a list of the directories. An attacker could then use this information to launch further attacks against the affected host.


Obtain Information


Upgrade to the latest version of Tomcat (3.3.1a or later), available from the Apache Jakarta Project Web site. See References.

For Debian GNU/Linux 3.0 (woody):
Upgrade to the latest tomcat package (3.3a-4.1 or later), as listed in DSA-246-1. See References.

For HP-UX 11.00, 11.11, 11.20, and 11.22 :
Download and install the latest apache web server or tomcat servlet engine, as listed in Hewlett-Packard Company Security Bulletin HPSBUX0303-249. See References.

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


Platforms Affected:

  • Apache Tomcat 3.0
  • Apache Tomcat 3.1
  • Apache Tomcat 3.1.1
  • Apache Tomcat 3.2
  • Apache Tomcat 3.2.1
  • Apache Tomcat 3.2.3
  • Apache Tomcat 3.2.4
  • Apache Tomcat 3.3
  • Apache Tomcat 3.3.1
  • Debian Debian Linux 3.0
  • HP HP-UX 11.00
  • HP HP-UX 11.11
  • HP HP-UX 11.20
  • HP HP-UX 11.22


Jan 25, 2003

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 the author/distributor (IBM Internet Security Systems X-Force) 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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