===================================================================== CERT-Renater Note d'Information No. 2006/VULN585 _____________________________________________________________________ DATE : 22/12/2006 HARDWARE PLATFORM(S) : / OPERATING SYSTEM(S) : Systems running IBM DB2. ====================================================================== =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2006.0938 -- [Win][UNIX/Linux] IBM DB2 Remote DoS during CONNECT processing 21 December 2006 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM DB2 8.1 prior to FixPak 13 Publisher: AppSecInc Operating System: AIX HP-UX Linux variants Solaris Windows Impact: Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2006-4257 Original Bulletin: http://www.appsecinc.com/resources/alerts/db2/2006-09-05.shtml Comment: IBM have released patches correcting this vulnerability, available at: http://www-1.ibm.com/support/docview.wss?uid=swg24013114 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 IBM DB2 Remote DoS during CONNECT processing AppSecInc Team SHATTER Security Advisory: http://www.appsecinc.com/resources/alerts/db2/2006-09-05.shtml Affected versions: All versions of IBM DB2 Database Server Risk level: Medium Credits: This vulnerability was discovered and researched by Vivek Rathod of Application Security Inc. Details: When connecting to a remote DB2 instance, the version 7 client typically sends a SQLJRA packet requesting start of the connection. If this SQLJRA packet is specially crafted, it can cause a DoS attack by crashing the DB2 instance. Altering a few bytes at specific offsets in the packet exposes multiple NULL/invalid pointer dereference bugs in the server code. For example, on Windows, if 0x00 is used at any of these offsets, the sqle_db2ra_as_con_database function (from DB2ENGN.DLL) attempts to access NULL or invalid memory locations, causing an unhandled access violation (0xC0000005). This causes the DB2 instance to crash. Impact: Any remote unauthenticated attacker can crash the DB2 instance. Vendor Status: Vendor was contacted and a patch was released. Fix: To fix the problem apply the fixpak 13 for DB2 version 8.1 (same as 8.2 FP6) http://www-306.ibm.com/software/data/db2/udb/support/downloadv8.html Links: Application Security, Inc advisory: http://www.appsecinc.com/resources/alerts/db2/2006-09-05.shtml IBM APAR: http://www-1.ibm.com/support/entdocview.wss?uid=swg1IY86917 Secunia Advisory: http://secunia.com/advisories/21550/ CVE Reference: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4257 - - -- Application Security, Inc. www.appsecinc.com AppSecInc is the leading provider of database security solutions for the enterprise. AppSecInc products proactively secure enterprise applications at more than 300 organizations around the world by discovering, assessing, and protecting the database against rapidly changing security threats. By securing data at its source, we enable organizations to more confidently extend their business with customers, partners and suppliers. Our security experts, combined with our strong support team, deliver up-to-date application safeguards that minimize risk and eliminate its impact on business. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFgFSm9EOAcmTuFN0RAs0uAKDD2JmnlktSvdZg/UdVtBZMcN8aMwCfR7AJ toZoy4X4AWp5t8Ut7vvkj8U= =tvlM - -----END PGP SIGNATURE----- - --------------------------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. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. 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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 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 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). 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