Microsoft SQL Server Agent scheduled jobs could create malicious output files
| mssql-agent-create-files (10257) |  Medium Risk |
Description:
Microsoft SQL Server 2000, Microsoft Desktop Engine (MSDE) 2000, Microsoft SQL Server 7.0, and Microsoft Data Engine (MSDE) 1.0 could allow a remote attacker with SQL server privileges to create malicious files on the system. This vulnerability is caused by improper permissions used by the SQL Server Agent when scheduled jobs create output files. A remote attacker could create a scheduled job that would produce a malicious output file when the SQL Server Agent processes the job. This output file would be created with privileges of the SQL Server Agent. An attacker could use this program to cause a denial of service or execute commands on the system.
Note: This vulnerability also affects Cisco CallManager version 3.3(x), Cisco Unity versions 3.x and 4.x, and Cisco Building Broadband Service Manager versions 5.0 and 5.1, which incorporate the use of either SQL Server 2000 or MSDE 2000.
Consequences:
Gain Access
Remedy:
Apply the appropriate patch for your system, as listed in Microsoft Security Bulletin MS03-031. See References.
Note: Microsoft originally provided a patch for this vulnerability in MS02-056, but it was superseded by the patch released with MS02-061, and then superseded by the patch released with MS03-031.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.
References:
- CIAC Information Bulletin N-003: Microsoft Cumulative Patch for SQL Server.
- cisco-sa-20030126-ms02-061: Cisco Security Advisory: Microsoft SQL Server 2000 Vulnerabilities in Cisco Products - MS02-061.
- Microsoft Security Bulletin MS02-056: Cumulative Patch for SQL Server (Q316333).
- Microsoft Security Bulletin MS02-061: Elevation of Privilege in SQL Server Web Tasks (Q316333).
- Microsoft Security Bulletin MS03-031: Cumulative Patch for Microsoft SQL Server (815495).
- SQLSecurity.com Web site: SQL Server/MSDE-Based Applications.
- CVE-2002-1138: Microsoft SQL Server 7.0 and 2000, including Microsoft Data Engine (MSDE) 1.0 and Microsoft Desktop Engine (MSDE) 2000, writes output files for scheduled jobs under its own privileges instead of the entity that launched it, which allows attackers to overwrite system files, aka Flaw in Output File Handling for Scheduled Jobs.
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 Data Engine 1.0
- Microsoft Data Engine 2000
- Microsoft SQL Server 2000
- Microsoft SQL Server 7.0
- Microsoft Windows 2003 Server
Reported:
Oct 02, 2002
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