Hiya

SQL Server 7.0 and 2000 provide for extended stored procedures,
which are external routines written in a programming language such
as C. These procedures appear to users as normal stored procedures
and are executed in the same way. SQL Server 7.0 and 2000 include
a number of extended stored procedures which are used for various
helper functions

Several of the Microsoft-provided extended stored procedures have
a flaw in common - namely, they fail to perform input validation
correctly, and are susceptible to buffer overruns as a result
exploiting the flaw could enable an attacker to either cause the
SQL Server service to fail, or to cause code to run in the security
context in which SQL Server is running. SQL Server can be
configured to run in various security contexts, and by default
runs as a domain user. The precise privileges the attacker could
gain would depend on the specific security context that the
service runs in.

An attacker could exploit this vulnerability in one of two ways.
Firstly, the attacker could attempt to load and execute a database
query that calls one of the affected functions. Secondly, if a
web-site or other database front-end were configured to access
and process arbitrary queries, it could be possible for the
attacker to provide inputs that would cause the query to call
one of the functions in question with the appropriate
malformed parameters.


Affected Software:

Microsoft SQL Server 7.0
Microsoft SQL Server 2000

Maximum Severity Rating: Moderate


Download locations for this patch

Microsoft SQL Server 7.0:

The patch for this issue is available in the SQL 7.0 Cumulative Security patch at

http://support.microsoft.com/support...asp?id=Q318268

Microsoft SQL Server 2000:

The patch for this issue is available in the SQL Server 2000 Cumulative Security patch at

http://support.microsoft.com/support...asp?id=Q316333

http://www.microsoft.com/technet/tre...n/ms02-020.asp

Regards

eddie