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Zero Day Initiative Advisory 11-153

Zero Day Initiative Advisory 11-153
Posted Apr 29, 2011
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 11-153 - This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Borland Interbase. Authentication is not required to exploit these vulnerabilities. The specific flaws exists within the database service, ibserver.exe, which binds to TCP port 3050. When a specially crafted "connect" (opcode 0x01) message is sent a stack-based buffer overflow can occur. If properly exploited this can lead to remote compromise of the system with SYSTEM credentials.

tags | advisory, remote, overflow, arbitrary, tcp, vulnerability
SHA-256 | 6998af38db39a41c7fb4bfb3c7941487043533cc3ecff125324c154c472a424e

Zero Day Initiative Advisory 11-153

Change Mirror Download
ZDI-11-153: Embarcadero Interbase connect Request Parsing Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-153

April 29, 2011

-- CVSS:
10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors:
Embarcadero

-- Affected Products:
Embarcadero Interbase

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 5626.
For further product information on the TippingPoint IPS, visit:

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 these vulnerabilities.

The specific flaws exists within the database service, ibserver.exe,
which binds to TCP port 3050. When a specially crafted "connect" (opcode
0x01) message is sent a stack-based buffer overflow can occur. If
properly exploited this can lead to remote compromise of the system with
SYSTEM credentials.

-- Vendor Response:

Embarcadero states:
This issue is now resolved in InterBase XE update 2. This update is
available from http://cc.embarcadero.com/reg/interbase. On that page,
there are multiple downloads which contain this fix. Below are the
descriptions of all the downloads that have this fix. Note that each
description has two downloads, one for English and one for Japanese.

InterBase XE 64-bit Update 2 (10.0.2.474) for Windows

InterBase XE Update 2 (10.0.2.467) for Linux

InterBase XE 32-bit Update 2 (10.0.2.474) for Windows


The readme document in the download has a list of defects resolved.

-- Disclosure Timeline:
2011-02-04 - Vulnerability reported to vendor
2011-04-29 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
* Anonymous

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

http://www.zerodayinitiative.com

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

http://www.zerodayinitiative.com/advisories/disclosure_policy/

Follow the ZDI on Twitter:

http://twitter.com/thezdi
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