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DDIVRT-2008-19 HP JetDirect Web Administration Directory Traversal

DDIVRT-2008-19 HP JetDirect Web Administration Directory Traversal


Date Discovered
October 23, 2008

Discovered By
Digital Defense, Inc. Vulnerability Research Team
Credit: Shmoov and r@b13$

Vulnerability Description
The HP-ChaiSOE/1.0 embedded web server on certain HP JetDirect printers allows a potential attacker to gain read only access to directories and files outside of the web root.  An attacker can leverage this flaw to read arbitrary system configuration files, cached documents, etc. Information obtained from an affected host may facilitate further attacks against the host.  Exploitation of this flaw is trivial using common web server directory traversal techniques.

Solution Description
The vendor has released an update.  See http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01623905 for more details.
Digital Defense, Inc. recommends restricting access to the HP JetDirect web administration interface to authorized hosts only.

Tested Systems / Software (with versions)
Embedded web server HP-ChaiSOE/1.0 on:
	HP JetDirect 2420
	HP JetDirect 4250

Vendor Contact