Novell NetBasic Scripting Handler (NSN) URL encoded backslash directory traversal

novell-netbasic-directory-traversal (9910) The risk level is classified as MediumMedium Risk

Description:

NetBasic Scripting Handler (NSN) could allow a remote attacker to traverse directories on the Web server. A remote attacker could send a specially-crafted URL request containing "dot dot" sequences with hexadecimal URL encoded backslash characters (%5) to traverse directories and gain unauthorized access to directories and files.


Consequences:

Obtain Information

Remedy:

Apply the patch for this vulnerability, as listed in Novell Technical Information Document 2963297. See References.

References:

  • BugTraq Mailing List, Tue Aug 20 2002 - 11:06:57 CDT: NetBasic Buffer Overflow + Scripting Vulnerability.
  • Novell Technical Information Document 2963297: NetBasic buffer/scripting vulnerabiltiy patch.
  • BID-5523: Novell NetBasic Scripting Server Directory Traversal Vulnerability
  • CVE-2002-1417: Directory traversal vulnerability in Novell NetBasic Scripting Server (NSN) for Netware 5.1 and 6, and Novell Small Business Suite 5.1 and 6, allows remote attackers to read arbitrary files via a URL containing a ..%5c sequence (modified dot-dot), which is mapped to the directory separator.
  • OSVDB ID: 8943: Novell NetBasic Scripting Server Encoded Traversal Arbitrary File Access

Platforms Affected:

  • Novell NetWare 5.1
  • Novell NetWare 6.0
  • Novell Small Business Suite 5.1
  • Novell Small Business Suite 6.0

Reported:

Aug 20, 2002

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