Microsoft SQL Server SQLXML ISAPI buffer overflow
| mssql-sqlxml-isapi-bo (9328) |  High Risk |
Description:
Microsoft SQLXML, included as part of Microsoft SQL Server 2000 Gold or available as a separate add-on component for SQL Server, is vulnerable to a buffer overflow in the Internet Services Application Programming Interface (ISAPI) extension that handles data queries over HTTP. SQLXML is a component used to exchange Extensible Markup Language (XML) data with a SQL server. By sending a malformed HTTP database request to an affected server, a remote attacker could overflow a buffer and execute arbitrary code on the server or cause the server to fail.
Platforms Affected:
- Microsoft, SQL Server 2000
- Microsoft, SQL Server 2000 Gold
- Microsoft, SQLXML 2
- Microsoft, SQLXML 3
- Microsoft, Windows 2003 Server
- Microsoft, Windows XP Professional
Remedy:
For vulnerability detection:
Enable the following checks in the ISS Protection Platform:
MssqlSqlxmlIsapiBo
MS02-030a
Enable the following checks in the ISS Protection Platform:
HTTP_IIS_MSSQL_xml
Block or restrict the following in the ISS Protection Platform as appropriate to the environment:
Port 80
For Manual Protection:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS02-030. See References.
Consequences:
Gain Access
References:
- CERT Advisory CA-2002-22, Multiple Vulnerabilities in Microsoft SQL Server at http://www.cert.org/advisories/CA-2002-22.html.
- CIAC Information Bulletin M-091, Microsoft Unchecked Buffer in SQLXML Vulnerability at http://www.ciac.org/ciac/bulletins/m-091.shtml.
- Microsoft Security Bulletin MS02-030, Unchecked Buffer in SQLXML Could Lead to Code Execution (Q321911) at http://www.microsoft.com/technet/security/bulletin/ms02-030.mspx.
- Westpoint Security Advisory wp-02-0007.txt, Microsoft SQLXML ISAPI Overflow and Cross Site Scripting at http://www.westpoint.ltd.uk/advisories/wp-02-0007.txt.
- BID-5004: Microsoft SQL Server SQLXML Buffer Overflow Vulnerability
- CVE-2002-0186: Buffer overflow in the SQLXML ISAPI extension of Microsoft SQL Server 2000 allows remote attackers to execute arbitrary code via data queries with a long content-type parameter, aka Unchecked Buffer in SQLXML ISAPI Extension.
- OSVDB ID: 5347: Microsoft SQL Server SQLXML ISAPI Extension Remote Overflow
- US-CERT VU#811371: Microsoft SQLXML ISAPI filter vulnerable to buffer overflow via contenttype parameter
Reported:
Jun 12, 2002
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