Microsoft hit by new SQL attack

Third bug in the past month.

By Robert McMillan, IDG news service
Published: 11:11 GMT, 23 December 08

Microsoft is now warning users of a serious bug in its SQL Server database software, just days after patching a critical flaw in its Internet Explorer browser.

Microsoft has issued a security advisory, saying that the bug could be exploited to run unauthorised software on systems running versions of Microsoft SQL Server 2000 and SQL Server 2005.

Attack code that exploits the bug has been published, but Microsoft said that it has not yet seen this code used in online attacks. Database servers could be attacked using this flaw if the criminals somehow found a way to log onto the system, and web applications that suffered from relatively common SQL injection bugs could be used as stepping stones to attack the back-end database, Microsoft said.

Desktop users running the Microsoft SQL Server 2000 Desktop Engine or SQL Server 2005 Express could be at risk in some circumstances, Microsoft said.

The bug lies in a stored procedure called "sp_replwritetovarbin," which is used by Microsoft's software when it replicates database transactions. It was publicly disclosed on 9 December by SEC Consult Vulnerability Lab, which said it had notified Microsoft of the issue in April.

"Systems with Microsoft SQL Server 7.0 Service Pack 4, Microsoft SQL Server 2005 Service Pack 3, and Microsoft SQL Server 2008 are not affected by this issue," Microsoft said in its advisory.

This is the third serious bug in Microsoft's software to be disclosed in the past month, but it is unlikely to be used in widespread attacks, according to Marc Maiffret, director of professional services, with The DigiTrust Group, a security consulting firm. "It is rather low risk given other vulnerabilities that exist," he said. "There are a lot of better ways to currently compromise windows systems."

After seeing the Internet Explorer flaw used in a growing number of online attacks, Microsoft rushed out an emergency patch for the issue last Wednesday. The company says it has also seen "limited and targeted attacks" exploiting a serious bug in the WordPad Text Converter for Word 97 files. As with the SQL bug, this WordPad converter vulnerability has not been patched, but is a prime candidate to be fixed in Microsoft's upcoming 13 January security updates.

What are your views on this subject? Use the form below to post a comment on this article up to 500 characters.

Characters remaining: 500

Related Security news

Hacker attacks on US military jump sharply in 2009

China source of most attacks, says report

21 November 2009

Microsoft denies building security 'backdoor' in Windows 7

Privacy organisations shouldn't read too much into NSA involvement it says

Pentagon expands exclusive deal with McAfee

Department of Defense uses McAfee products

Police arrest pair over global banking web scam

Man and woman arrested in Manchester for using notorious Zeus Trojan

Related Security reviews

Lumension application control review

Bit9 Parity Suite

BitDefender Total Security 2008

Email this article to a friend or colleague:

PLEASE NOTE: Your name is used only to let the recipient know who sent the story, and in case of transmission error. Both your name and the recipient's name and address will not be used for any other purpose.

Techworld White Papers

Database security: Preventing enterprise data leaks at the source

IDC discusses the growing internal threats to business information, the impact of government regulations on the protection of data, and how enterprises must adopt database security best practices...

Download Whitepaper

Service-oriented security

SOA has become an integral part of enterprise software by providing a framework to efficiently develop software as services that is easily sharable, reusable, and integrated. No where is the need more apparent than in the Identity Management space. Welcome to the age of Service-Oriented Security (SOS).

Download Whitepaper

Data protection prospective vendor checklist

Organisations need a way to map business needs against all these challenges in procuring a technical solution. To help, SANS has developed the following Prospective Vendor Checklist.

Download Whitepaper

Unlock the power of the mainframe

This whitepaper presents the notion of CICS as an integration hub based on a component-based, service-oriented architecture supporting Web services. Highlights will review the challenges and contrasted support for Web services natively in CICS.

Download Whitepaper

Techworld UK - Technology - Business

COLT White Paper

Are all VoIP services the same?

Questions to ask your service provider to ensure you get the VoIP service you need
With careful choice of partner, your business can have all the advantages of VoIP access - reduced costs, flexibility and simplicity - without the drawbacks.
This white paper is your guide to ensure you get right the VoIP service and details the pitfalls which businesses would do well to avoid.

Download white paper
BMC

Ride the express lane in the journey to speed ITIL adoption

Explore the challenges in making the journey to ITIL and the criteria for selecting consulting services
By following ITIL practices, your IT organisation will become more closely integrated with the business. We recommend making the journey to ITIL in a sequence of six incremental steps, the phases of which are driven through execution of a strategic transformational roadmap.

Download white paper

Webcast: IT Financial Management: Cost Optimisation for Efficiency and Agility.
On Demand Webcast
Join this webcast to learn about the techniques and technologies that can help you prove the value of IT to the business by understanding the true cost of today's IT services and those that will be necessary to deliver future success.

Register Today

Site Map

IDG Network

* *