exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

mssql-webtasks.txt

mssql-webtasks.txt
Posted Oct 22, 2002
Authored by David Litchfield | Site ngssoftware.com

NGSSoftware Security Advisory - Microsoft SQL Server 2000 and 7 allow attackers to gain control of the database by elevating their privileges by using the xp_runwebtask stored procedure. Fix available here.

SHA-256 | 0993da5c8ab7c5ff24d06d11c71e7c6166e5eef4f669d081f8f47da07b21ae30

mssql-webtasks.txt

Change Mirror Download
NGSSoftware Insight Security Research Advisory

Name: Microsoft SQL Server Webtasks privilege elevation
Systems: Microsoft SQL Server 2000 and 7
Severity: High Risk
Vendor URL: http://www.microsoft.com/
Author: David Litchfield (david@ngssoftware.com)
Advisory URL: http://www.ngssoftware.com/advisories/mssql-webtasks.txt
Date: 17th October 2002
Advisory number: #NISR17102002


Description
***********
Using a number of flaws in the webtask functionality of Microsoft SQL Server
an attacker may gain control of the database by elevating their privileges.

Details
*******
The xp_runwebtask stored procedure fails to set permissions properly when
executed and runs with the privileges of the SQL Server. xp_runwebtask can
be executed by 'PUBLIC'.

The permissions of the table that stores webtasks, namely
msdb.dbo.mswebtasks, are set loosely allowing 'PUBLIC' to INSERT, UPDATE,
DELETE and SELECT.

By updating a webtask owned by the database owner and then running it
through xp_runwebtask an attacker may elevate their privileges. In terms of
exploitation an attacker may choose to run OS commands or add themselves to
the SYSADMIN group.




Fix Information
***************
NGSSoftware alerted Microsoft to these problems on the 23rd of August.
Microsoft has released a patch that addresses these issues. For more details
please see

http://www.microsoft.com/technet/treeview/?url=/technet/security/bulletin/MS
02-061.asp

A check and fix for these problems already exists in NGSSQUirreL, an
advanced SQL Server security management tool, of which more information
is available from the NGSSite: http://www.nextgenss.com/.
Login or Register to add favorites

File Archive:

August 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Aug 1st
    15 Files
  • 2
    Aug 2nd
    22 Files
  • 3
    Aug 3rd
    0 Files
  • 4
    Aug 4th
    0 Files
  • 5
    Aug 5th
    15 Files
  • 6
    Aug 6th
    11 Files
  • 7
    Aug 7th
    43 Files
  • 8
    Aug 8th
    42 Files
  • 9
    Aug 9th
    36 Files
  • 10
    Aug 10th
    0 Files
  • 11
    Aug 11th
    0 Files
  • 12
    Aug 12th
    0 Files
  • 13
    Aug 13th
    0 Files
  • 14
    Aug 14th
    0 Files
  • 15
    Aug 15th
    0 Files
  • 16
    Aug 16th
    0 Files
  • 17
    Aug 17th
    0 Files
  • 18
    Aug 18th
    0 Files
  • 19
    Aug 19th
    0 Files
  • 20
    Aug 20th
    0 Files
  • 21
    Aug 21st
    0 Files
  • 22
    Aug 22nd
    0 Files
  • 23
    Aug 23rd
    0 Files
  • 24
    Aug 24th
    0 Files
  • 25
    Aug 25th
    0 Files
  • 26
    Aug 26th
    0 Files
  • 27
    Aug 27th
    0 Files
  • 28
    Aug 28th
    0 Files
  • 29
    Aug 29th
    0 Files
  • 30
    Aug 30th
    0 Files
  • 31
    Aug 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close