Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Vulnerabilities / Threats

4/28/2008
03:46 PM
Connect Directly
LinkedIn
Twitter
RSS
E-Mail
50%
50%

Microsoft Blames Poor Coding Practices For Massive SQL Injection Attack

U.S. CERT recommends disabling JavaScript and ActiveX because of attacks that have compromised legitimate Web sites using Microsoft IIS Web Server and Microsoft SQL Server.

Microsoft on Friday found itself trying to clarify that it has nothing to do with the poor coding practices that have enabled a massive SQL injection attack to affect Web sites using Microsoft IIS Web Server and Microsoft SQL Server.

"The attacks are facilitated by SQL injection exploits and are not issues related to IIS 6.0, ASP, ASP.Net, or Microsoft SQL technologies," said Bill Sisk, a communications manager at Microsoft, in a blog post. "SQL injection attacks enable malicious users to execute commands in an application's database."

Sisk said that to defend against SQL injection attacks, developers should follow secure coding practices.

SQL injection attacks involve insufficiently filtered code submitted to SQL databases through user input mechanisms.

On Friday, U.S. CERT issued a warning about SQL injection attacks that have compromised a large number of legitimate Web sites. Affected Web sites contain injected JavaScript that attempts to exploit several known vulnerabilities. U.S. CERT recommends disabling JavaScript and ActiveX.

Because otherwise legitimate Web sites deliver this attack, SAN Internet Storm Center handler Donald Smith observes that the concept of a "trusted" or "legitimate" site is no longer meaningful. The attack has reportedly affected the Web sites of the United Nations and the U.S. Department of Homeland Security, to name a few.

On Thursday, computer security firm F-Secure said that it had found the offending JavaScript code on over half a million Web pages. The company said that IT administrators should immediately block nmidahena.com, aspder.com, and nihaorr1.com, three domains associated with the injection attack.

Google may have taken some action to remove some of the affected pages from its index. A Google search for a text string associated with the malicious JavaScipt now yields only 56,700 results. A screenshot of what is presumably a similar Google search -- the exact string is blurred -- performed by F-Secure last week shows 510,000 results.

A search using the same text string on Microsoft's Live Search returns 268,000 results. Yahoo Search returns 560,000 results for the text string in question.

Patrick Runald, a security researcher at F-Secure, explained in a blog post that the attack "finds all text fields in the database and adds a link to malicious JavaScript to each and every one of them which will make your Web site display them automatically. So essentially what happened was that the attackers looked for ASP or ASPX pages containing any type of querystring (a dynamic value such as an article ID, product ID, et cetera) parameter and tried to use that to upload their SQL injection code."

Runald reiterated Sisk's point that poorly written ASP and ASPX (.net) was to blame rather than any specific vulnerability in Microsoft's software.

Comment  | 
Print  | 
More Insights
Comments
Newest First  |  Oldest First  |  Threaded View
News
FluBot Malware's Rapid Spread May Soon Hit US Phones
Kelly Sheridan, Staff Editor, Dark Reading,  4/28/2021
Slideshows
7 Modern-Day Cybersecurity Realities
Steve Zurier, Contributing Writer,  4/30/2021
Commentary
How to Secure Employees' Home Wi-Fi Networks
Bert Kashyap, CEO and Co-Founder at SecureW2,  4/28/2021
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Current Issue
2021 Top Enterprise IT Trends
We've identified the key trends that are poised to impact the IT landscape in 2021. Find out why they're important and how they will affect you today!
Flash Poll
How Enterprises are Developing Secure Applications
How Enterprises are Developing Secure Applications
Recent breaches of third-party apps are driving many organizations to think harder about the security of their off-the-shelf software as they continue to move left in secure software development practices.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2021-31755
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setmac allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31756
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /gofrom/setwanType allows attackers to execute arbitrary code on the system via a crafted post request. This occurs when input vector controlled by malicious attack get copie...
CVE-2021-31757
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setVLAN allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31758
PUBLISHED: 2021-05-07
An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. A stack buffer overflow vulnerability in /goform/setportList allows attackers to execute arbitrary code on the system via a crafted post request.
CVE-2021-31458
PUBLISHED: 2021-05-07
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Foxit Reader 10.1.1.37576. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the handlin...