====================================================================== Secunia Research 13/03/2006 - Dwarf HTTP Server Source Disclosure and Cross-Site Scripting - ====================================================================== Table of Contents Affected Software....................................................1 Severity.............................................................2 Description of Vulnerability.........................................3 Solution.............................................................4 Time Table...........................................................5 Credits..............................................................6 References...........................................................7 About Secunia........................................................8 Verification.........................................................9 ====================================================================== 1) Affected Software * Dwarf HTTP Server version 1.3.2. Prior versions may also be affected. ====================================================================== 2) Severity Rating: Moderately Critical Impact: Exposure of sensitive information Cross-site scripting Where: Remote ====================================================================== 3) Description of Vulnerability Secunia Research has discovered two vulnerabilities in Dwarf HTTP Server, which can be exploited by malicious people to disclose potentially sensitive information and to conduct cross-site scripting attacks. 1) The vulnerability is caused due to a validation error of the filename extension supplied by the user in the URL. This can be exploited to retrieve the source code of JSP files from the server via specially crafted requests containing dot, space, slash and NULL characters. 2) Input passed to the URL is not sansitised before being return to the user in an error message. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site. ====================================================================== 4) Solution Update to version 1.3.3. ====================================================================== 5) Time Table 17/02/2006 - Initial vendor notification. 22/02/2006 - Initial vendor reply. 13/03/2006 - Public disclosure. ====================================================================== 6) Credits Discovered by Tan Chew Keong, Secunia Research. ====================================================================== 7) References The Common Vulnerabilities and Exposures (CVE) project has assigned CVE-2006-0819 and CVE-2006-0820 for the vulnerabilities. ====================================================================== 8) About Secunia Secunia collects, validates, assesses, and writes advisories regarding all the latest software vulnerabilities disclosed to the public. These advisories are gathered in a publicly available database at the Secunia website: http://secunia.com/ Secunia offers services to our customers enabling them to receive all relevant vulnerability information to their specific system configuration. Secunia offers a FREE mailing list called Secunia Security Advisories: http://secunia.com/secunia_security_advisories/ ====================================================================== 9) Verification Please verify this advisory by visiting the Secunia website: http://secunia.com/secunia_research/2006-13/advisory/ Complete list of vulnerability reports published by Secunia Research: http://secunia.com/secunia_research/ ======================================================================