Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0230 -- iDEFENSE Security Advisory 03.19.04 Borland Interbase admin.ib Administrative Access Vulnerability 24 March 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Borland Interbase Publisher: iDEFENSE Operating System: Linux Solaris UNIX Windows Impact: Administrator Compromise Access Required: Existing Account Comment: Note that this vulnerability allows escalation by existing users to database administrative privileges. - --------------------------BEGIN INCLUDED TEXT-------------------- 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@labs 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@labs interbase]# chmod 664 /opt/interbase/admin.ib [root@labs 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@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. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBQGDJzCh9+71yA2DNAQLmywP+JNMEL7DQF9cClx3JfZEYoTvlFL7bEfLW pXBArUqNBjJIFhFXHMVH+cm1vvgI5Q5Mcu7BabFyoZRw3G9X3syIDWZ7XywkZl5E Ahc68L0/CT65p7waXZt8QCX0PJ4lLEZUfZ53CAPzBPGMhAY6ToIztbHV9ABmS0Di PBhFjgAbGqc= =4Z0R -----END PGP SIGNATURE-----