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Message-ID: <FB24803D1DF2A34FA59FC157B77C97050215CF94@IDSERV04.idef.com> From: idlabs-advisories at idefense.com (idlabs-advisories@...fense.com) Subject: iDEFENSE Security Advisory 03.19.04: Borland Interbase admin.ib Administrative Access Vulnerability Borland Interbase admin.ib Administrative Access Vulnerability iDEFENSE Security Advisory 03.19.04 www.idefense.com/application/poi/display?id=80&type=vulnerabilities March 19, 2004 I. BACKGROUND Borland Interbase is a small, high performance commercial database for Linux, Solaris, and Windows operating systems. More information about Borland Interbase is available at http://www.borland.com/interbase/. II. DESCRIPTION Exploitation of default file permissions in Borland Interbase can allow local attackers to gain database administrative privileges. The vulnerability specifically exists due to insecure permissions on the admin.ib user database file. Local attackers can add or modify existing accounts to gain administrative privileges. The default file permissions are shown below: [root@...s interbase]# ls -l /opt/interbase/admin.ib -rw-rw-rw- 1 root root 616497 Dec 30 11:17 /opt/interbase/admin.ib III. ANALYSIS Successful exploitation yields administrative privileges over the database to local attackers. This can lead to further compromise as any information stored within the database is now available to the attacker. This may include: authentication information, financial information and personal information. Exploit code for this issue is unnecessary. IV. DETECTION iDEFENSE has confirmed the existence of this vulnerability in Borland Interbase 7.1 for Linux. It is suspected that previous versions of Borland Interbase for Linux are also vulnerable. V. WORKAROUNDS Remove global write permissions from the admin.ib user database file. [root@...s interbase]# chmod 664 /opt/interbase/admin.ib [root@...s interbase]# ls -l /opt/interbase/admin.ib -rw-rw-r-- 1 root root 616497 Dec 30 11:17 /opt/interbase/admin.ib VI. CVE INFORMATION A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not been assigned yet. VII. DISCLOSURE TIMELINE January 13, 2004 Vulnerability acquired by iDEFENSE February 9, 2004 Initial vendor notification sent - no response February 12, 2004 iDEFENSE clients notified March 1, 2004 Secondary vendor notification sent - no response March 19, 2004 Public disclosure VIII. CREDIT Larry Cashdollar (http://vapid.dhs.org) is credited with this discovery. Get paid for vulnerability research http://www.idefense.com/poi/teams/vcp.jsp IX. LEGAL NOTICES Copyright (c) 2004 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@...fense.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.
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