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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0555 -- [Win][Linux][Solaris] Borland Interbase ibserver.exe Create-Request Buffer Overflow Vulnerability 25 July 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Borland InterBase 2007 SP1 and prior Publisher: 3Com Operating System: Windows Linux variants Solaris Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated CVE Names: CVE-2007-3566 Original Bulletin: http://dvlabs.tippingpoint.com/advisory/TPTI-07-13 - --------------------------BEGIN INCLUDED TEXT-------------------- TPTI-07-13: Borland Interbase ibserver.exe Create-Request Buffer Overflow Vulnerability http://dvlabs.tippingpoint.com/advisory/TPTI-07-13 http://dvlabs.tippingpoint.com/blog/1024/Step-by-Step-of-Discovery July 24, 2007 - -- CVE ID: CVE-2007-3566 - -- Affected Vendor: Borland - -- Affected Products: Borland InterBase 2007 - -- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since February 1, 2007 by Digital Vaccine protection filter ID 5066. For further product information on the TippingPoint IPS: http://www.tippingpoint.com - -- Vulnerability Details: This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Borland Interbase. Authentication is not required to exploit this vulnerability. The specific flaw exists within the database service, ibserver.exe, which binds to TCP port 3050. The service receives socket data in the following format: [4-byte request][request arguments][data] A vulnerability exists in Interbase when specifying a "create" request (0x14). The request is broken down as such: [0x00000014][4-byte id][4-byte size][data] The vulnerability exists during an inline string copy operation. 0x0043A0C5 mov ecx, [ebp+var_8D8] 0x0043A0CB and ecx, 0FFFFh 0x0043A0D1 mov esi, [ebp+arg_8] 0x0043A0D4 mov edi, [ebp+var_1C] 0x0043A0D7 mov eax, ecx 0x0043A0D9 shr ecx, 2 0x0043A0DC rep movsd Where ecx is our 4-byte size, esi is our data, and edi a stack pointer. When a large value is specified in the size, the associate data is copied to the stack resulting in a classic overflow. With enough data the SEH pointer can be compromised and arbitrary code execution is trivial. - -- Vendor Response: Borland has released InterBase 2007 SP2 which addresses this vulnerability. More details can be found at: http://www.codegear.com/downloads/regusers/interbase - -- Disclosure Timeline: 2007.01.31 - Vulnerability reported to vendor 2007.02.01 - Digital Vaccine released to TippingPoint customers 2007.07.24 - Coordinated public release of advisory - -- Credit: This vulnerability was discovered by Cody Pierce, TippingPoint DVLabs. CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is being sent by 3Com for the sole use of the intended recipient(s) and may contain confidential, proprietary and/or privileged information. Any unauthorized review, use, disclosure and/or distribution by any recipient is prohibited. If you are not the intended recipient, please delete and/or destroy all copies of this message regardless of form and any included attachments and notify 3Com immediately by contacting the sender via reply e-mail or forwarding to 3Com at postmaster@3com.com. - --------------------------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. 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 =========================================================================== 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRqatvyh9+71yA2DNAQIakgP8DlFAfXO6IyVuYM/D5TuKhgx/0ihWA9Q/ WKBcVLhItK6yjk6vUwBtqn5O1tT7zZ3H5TIDY6yfFM9vewy9jEpVvpKTB/yDFtGa sfJuOYUGmt2nStBWZ6ZSVuYXC2zyYj/w7I8IHeF3kDBLMkrRSQPU4AjstNJZ8nBl iQmBPfIr9Rg= =0MAe -----END PGP SIGNATURE-----