Article ID: 317035
Article Last Modified on 11/21/2006
APPLIES TO
- Microsoft Internet Information Services 5.1
- Microsoft Internet Information Services 5.0
- Microsoft Internet Information Server 4.0
This article was previously published under Q317035
SYMPTOMS
A cross-site scripting (CSS) vulnerability exists in Internet Information Server (IIS) 4.0, Internet Information Services (IIS) 5.0, and IIS 5.1. Through this vulnerability, an attacker can send a request to an affected server that causes a Web page that contains script to be sent to another user. The script executes in the user's browser as though it comes from the third-party site, which lets the script run by using the security settings that are appropriate to the third-party Web site, and also permits the attacker to access any data that belongs to the site.
This vulnerability can only be exploited if the user opens a Hypertext Markup Language (HTML) mail message or visited Web site of a malicious user. The code cannot be "injected" into an existing session.
CAUSE
This vulnerability occurs because a message that is returned when someone requests a Web page that has been moved to a new location does not properly validate all inputs before using them. Such a message is known as a redirect response.
A successful attack can only be performed by using this message if the target of the attack is running a browser other than Microsoft Internet Explorer.
RESOLUTION
Internet Information Services 5.1
The update for this problem is included in the "MS02-018: April 2002 Cumulative Patch for Internet Information Services". For additional information about how to obtain this patch, click the article number below to view the article in the Microsoft Knowledge Base:
319733 MS02-018: April 2002 Cumulative Patch for Internet Information Services
Internet Information Services 5.0
The update for this problem is included in the "MS02-018: April 2002 Cumulative Patch for Internet Information Services". For additional information about how to obtain this patch, click the article number below to view the article in the Microsoft Knowledge Base:
319733 MS02-018: April 2002 Cumulative Patch for Internet Information Services
To resolve this problem, obtain the latest service pack for Windows 2000. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
260910 How to Obtain the Latest Windows 2000 Service Pack
Internet Information Server 4.0
The update for this problem is included in the "MS02-018: April 2002 Cumulative Patch for Internet Information Services". For additional information about how to obtain this patch, click the article number below to view the article in the Microsoft Knowledge Base:
319733 MS02-018: April 2002 Cumulative Patch for Internet Information Services
STATUS
Internet Information Services 5.1
Microsoft has confirmed that this problem may cause a degree of security vulnerability in Microsoft Internet Information Services 5.1.
Internet Information Services 5.0
Microsoft has confirmed that this problem may cause a degree of security vulnerability in Microsoft Internet Information Services 5.0. This problem was first corrected in Windows 2000 Service Pack 3.
Internet Information Server 4.0
Microsoft has confirmed that this problem may cause a degree of security vulnerability in Microsoft Internet Information Server 4.0.
MORE INFORMATION
For more information on these vulnerabilities, see the following Microsoft Web site:
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:
265173 Datacenter Program and Windows 2000 Datacenter Server Product
For additional information on how to install multiple hotfixes with only one reboot, click the article number below to view the article in the Microsoft Knowledge Base:
296861 Use QChain.exe to Install Multiple Hotfixes with One Reboot
Additional query words: kbIISCom kbIIS400500510April2002Rollup security_patch
Keywords: kbbug kbfix kbwin2000presp3fix kbqfe kbwin2000sp3fix kbsecurity kbhotfixserver KB317035
