This may also affect other web servers web applications web proxies load balancers and through a variety of misconfigurations related to redirection. Look at these instructions for Apache and IIS which are two of the more popular web servers.
6 4 Investigating Web Service Vulnerabilities Chapter 6 Assessing Web Services Network Security Assessment Networking Etutorials Org
The Custom HTTP Headers box lists all of the HTTP Headers IIS will include on each response see the screen shot below.
Web server version disclosure vulnerability iis. Every web server should have documentation that describes how to configure this setting. The HTTP responses returned by this web application include a header named Server. You can use the following URL Rewrite Outbound rule.
Right-click on the website to modify and choose Properties from the context menu. Select the HTTP Headers tab. The value of this header includes the version of Microsoft IIS server.
Finally we changed the IIS version name on the datas header. In some cases IIS 70 server may be flagged as insecure by security scanning tools if internal IP address of the server is revealed. A security tool such as the Acunetix network security scanner would highlight and report that your web server provides such information and would recommend limiting that information.
Open a command prompt and change the current directory to cinetpubadminscripts or to where the adminscripts can be found. In a security bulletin released today as part of Patch Day Microsoft describes two relatively minor information disclosure vulnerabilities that affect the popular web server and its optional FTP server. You can write anything to the Value item as server name.
Some applications automatically. Microsoft IIS should be configured to remove unwanted HTTP response headers from the response. SF_NOTIFY_PREPROC_HEADERS notifications occur for each request.
On IIS 7 IIS 7 85 80 85 IIS 100 use an rewrite outboundRule to remove the web server version information from the Server. I have run a Qualys Web Application Scan for a customer website and found the Path Disclosure Path-Based Vulnerability. Run the commands adsutil set w3svcUseHostName True net stop iisadmin y net start w3svc.
To prevent internal IP address disclosure take the following steps. There is a known issue with Microsoft IIS 40 doing this in its default configuration. Microsoft IIS Internal IP Address Disclosure Vulnerability.
Unspecified vulnerability in Microsoft IIS 60 70 and 75 when Extended Protection for Authentication is enabled allows remote authenticated users to execute arbitrary code via unknown vectors related to token checking that trigger memory corruption aka IIS Authentication Memory Corruption Vulnerability. I have seen in many places that people say that headers of the following types is a vulnerability. In addition if a particular web server version is known to be vulnerable to a specific exploit the attacker would just need to use that exploit as part of their assault on the target web server.
This does not solve any vulnerabilities and thus does not eliminate the need to install updates. But you can rewrite its content and empty it. Solution Apply configuration suggested by vendor.
It returned vulnerabilities regarding the physical path disclosure one hit for each port the web server is listening on — 443 and 8787 when a 404 message is being returned to the client. Internet Information Services IIS is the popular Web and FTP server that ships with all server versions of Windows. Add the following item to the your web config file under the tag.
Server – Windows Server 2008 Standard SP2 Network Configuration Manager Version – 71 IIS – 70. Unfortunately you cannot really remove the Server header. Launch the Internet Information Services IIS Manager.
Consult web references for more information. The WebDAV extension in Microsoft Internet Information Services IIS 51 and 60 allows remote attackers to bypass URI-based protection mechanisms and list folders or read create or modify files via a c0af Unicode character at an arbitrary position in the URI as demonstrated by inserting c0af into a protected initial pathname component to bypass the password protection on the protected folder aka IIS 51 and 60 WebDAV Authentication Bypass Vulnerability a different. These notifications indicate that the server has completed preprocessing of the headers associated with the request but has not begun to process the information in the headers.
I can see that this gives the attacker additional information so that he can verify the known bugs on these platforms and then abuse them. We have to exchange 2013 CU13 servers that have a failed our recent pen test due to Web Server Internal IP AddressInternal Network Name Disclosure Vulnerability PCI DSS 32 requirement 137 do not disclose private IP addresses and routing information to unauthorized parties. After that restart IIS by this command on cmd console.
Expand the Web Sites folder.
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