Microsoft SQL Server pre-authentication buffer overflow
| mssql-preauth-bo (9788) |  High Risk |
Description:
Microsoft SQL Server 2000 and Microsoft Desktop Engine (MSDE) 2000 are vulnerable to a buffer overflow. By sending malformed data to TCP port 1433, an unauthenticated remote attacker could overflow a buffer and possibly execute code on the server with SYSTEM level privileges.
Note: This vulnerability also affects Cisco CallManager, Cisco Unity, and Cisco Building Broadband Service Manager, which incorporate the use of either SQL Server 2000 or MSDE 2000.
Platforms Affected:
- Cisco, Building Broadband Service Manager 5.0
- Cisco, Building Broadband Service Manager 5.1
- Cisco, Unified CallManager 3.3
- Cisco, Unity Server 3.0
- Cisco, Unity Server 4.0
- Microsoft, SQL Server 2000
- Microsoft, Windows 2003 Server
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS02-056. See References.
For Microsoft SQL Server 2000:
Microsoft originally provided a patch for this vulnerability in MS02-056, but it was superseded by the patch released with MS02-061, and then superseded by the patch released with MS03-031.
For Cisco CallManager, Cisco Unity, and Cisco Building Broadband Service Manager: Refer to Cisco Security Advisory 2003 January 26 05:30 GMT for upgrade or patch information. See References.
Consequences:
Gain Access
References:
- BugTraq Mailing List, Mon Aug 05 2002 - 19:02:44 CDT , SPIKE 2.5 and associated vulns at http://archives.neohapsis.com/archives/bugtraq/2002-08/0009.html.
- BugTraq Mailing List, Wed Aug 07 2002 - 10:10:19 CDT , MS SQL Server Hello Overflow NASL script at http://archives.neohapsis.com/archives/bugtraq/2002-08/0031.html.
- CIAC Information Bulletin N-003, Microsoft Cumulative Patch for SQL Server at http://www.ciac.org/ciac/bulletins/n-003.shtml.
- cisco-sa-20030126-ms02-061, Cisco Security Advisory: Microsoft SQL Server 2000 Vulnerabilities in Cisco Products - MS02-061 at http://www.cisco.com/warp/public/707/cisco-sa-20030126-ms02-061.shtml.
- Microsoft Security Bulletin MS02-056, Cumulative Patch for SQL Server (Q316333) at http://www.microsoft.com/technet/security/bulletin/ms02-056.mspx.
- Microsoft Security Bulletin MS02-061, Elevation of Privilege in SQL Server Web Tasks (Q316333) at http://www.microsoft.com/technet/security/Bulletin/MS02-061.mspx.
- Microsoft Security Bulletin MS03-031, Cumulative Patch for Microsoft SQL Server (815495) at http://www.microsoft.com/technet/security/bulletin/ms03-031.mspx.
- SQLSecurity.com Web site, SQL Server/MSDE-Based Applications at http://www.sqlsecurity.com/FAQs/SQLServerMSDEBasedApplications/tabid/62/Default.aspx.
- BID-5411: Microsoft SQL Server User Authentication Remote Buffer Overflow Vulnerability
- CVE-2002-1123: Buffer overflow in the authentication function for Microsoft SQL Server 2000 and Microsoft Desktop Engine (MSDE) 2000 allows remote attackers to execute arbitrary code via a long request to TCP port 1433, aka the Hello overflow.
Reported:
Aug 05, 2002
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