J-Security Center

Title: ht://Dig Remote Denial of Service/File Disclosure Vulnerability

Severity: HIGH

Description:

ht://Dig is freely available, open-source web search engine and indexing software.

ht://Dig is usable via the web interface or from the command line. It may be possible for a remote attacker to cause a denial of service or under circumstances display arbitrary web-readable files. This is due to the fact that it is possible to use command line arguments from the web interface. In particular, the -c [filename] argument is normally used to specify an alternate configuration file. A maliciously crafted web request for /dev/zero may cause a denial of service by exhausting resources on the host. A request for a web-readable file may cause it to be disclosed.

For example:

http://target/cgi-bin/htsearch?-c/dev/zero

http://target/cgi-bin/htsearch?-c/path/to/webreadablefile

The first example will cause a denial of services which may affect the entire host(depending on resource limits). The second example has the potential to disclose an arbitrary web-readable file.

Sensitive information contained in disclosed web-readable files may be used to mount further attacks on the host.

Affected Products:

  • Caldera OpenLinux Server 3.1.0
  • Caldera OpenLinux Workstation 3.1.0
  • Conectiva Linux 5.0.0
  • Conectiva Linux 5.1.0
  • Conectiva Linux 6.0.0
  • Conectiva Linux 7.0.0
  • Debian Linux 2.2.0
  • Debian Linux 2.2.0 68k
  • Debian Linux 2.2.0 alpha
  • Debian Linux 2.2.0 arm
  • Debian Linux 2.2.0 powerpc
  • Debian Linux 2.2.0 sparc
  • HP Secure OS software for Linux 1.0.0
  • MandrakeSoft Linux Mandrake 7.2.0
  • MandrakeSoft Linux Mandrake 8.0.0
  • MandrakeSoft Linux Mandrake 8.0.0 ppc
  • MandrakeSoft Linux Mandrake 8.1.0
  • RedHat Linux 7.1.0
  • RedHat Linux 7.2.0
  • ht://Dig Group ht://Dig 3.1.5
  • ht://Dig Group ht://Dig 3.1.5-7
  • ht://Dig Group ht://Dig 3.2.0.0
  • ht://Dig Group ht://Dig 3.2.00b2
  • ht://Dig Group ht://Dig 3.2.00b3

References:

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