From labs-no-reply@idefense.com Mon Mar 14 16:52:53 2005 From: iDEFENSE Labs To: bugtraq@securityfocus.com, vulnwatch@vulnwatch.org Date: Mon, 14 Mar 2005 16:03:21 -0500 Subject: iDEFENSE Security Advisory 03.14.05: MySQL MaxDB Web Agent Multiple Denial of Service Vulnerabilities MySQL MaxDB Web Agent Multiple Denial of Service Vulnerabilities iDEFENSE Security Advisory 03.14.05 www.idefense.com/application/poi/display?id=218&type=vulnerabilities March 14, 2005 I. BACKGROUND MaxDB by MySQL is a re-branded and enhanced version of SAP DB, SAP AG's open source database. MaxDB is a heavy-duty, SAP-certified open source database that offers high availability, salability and a comprehensive feature set. MaxDB complements the MySQL database server, targeted for large mySAP ERP environments and other applications that require maximum enterprise-level database functionality. II. DESCRIPTION A number of remotely exploitable input validation errors have been found to exist in MySQL MaxDB and SAP DB Web Agent products. The vulnerabilities specifically exist due to insufficient validation of user input data. The input validation error results in a null pointer dereference in the following functions which can lead to a denial of service condition: DBMCli_String::ReallocString DBMCli_String::operator DBMCli_Buffer::ForceResize DBMCli_Wizard::InstallDatabase DBMCli_Devspaces::Complete DBMWeb_TemplateWizard::askForWriteCountStep5 DBMWeb_DBMWeb::wizardDB A remote attacker can request the function with invalid parameters to cause a null pointer dereference resulting in a crash of MySQL MaxDB Web Agent. III. ANALYSIS Exploitation allows remote attackers to cause a denial of service condition. The attacks are trivially exploited, as a remote attacker can send simple HTTP requests to cause MaxDB Web Agent to crash. IV. DETECTION iDEFENSE has confirmed that MySQL MaxDB 7.5.00 for Windows is vulnerable. It is suspected that earlier versions and versions on other platforms are vulnerable as well. V. WORKAROUND Use a firewall to only allow trusted hosts to connect to the MySQL MaxDB Web Agent HTTP Service. VI. VENDOR RESPONSE These vulnerabilities are addressed in MySQL MaxDB 7.5.00.24 available for download at: http://dev.mysql.com/downloads/maxdb/7.5.00.html VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the names CAN-2005-0083 to these issues. This is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 09/15/2004 Initial vendor contact 01/06/2005 Secondary vendor contact 01/07/2005 Initial vendor response 03/14/2005 Public disclosure IX. CREDIT An anonymous contributor is credited with discovering this vulnerability. Get paid for vulnerability research http://www.idefense.com/poi/teams/vcp.jsp Free tools, research and upcoming events http://labs.idefense.com X. LEGAL NOTICES Copyright (c) 2005 iDEFENSE, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDEFENSE. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please email customerservice@idefense.com for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.