Internet Information Services (IIS) is a web server application and set of feature extension modules created by Microsoft for use with Microsoft Windows.

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3
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3answers
7k views

BEAST: IIS6: Failing PCI scan - are these ciphers OK?

Our PCI compliance scanner, TrustWave, have failed our Win 2003/IIS6 site on BEAST because of the following cyphers: Cipher Suite: SSLv3 : DES-CBC3-SHA Cipher Suite: SSLv3 : RC4-SHA Cipher Suite: ...
2
votes
1answer
191 views

Are COMET installations immune to “Slow TCP Reading” DoS on Windows? (Such as SignalR or WebSync)

My understanding is that COMET implementations of WebSync and SignalR do not directly use IIS and are a few layers lower on the ISO model. After reading Qualys's blog regarding slow TCP reading, I ...
0
votes
1answer
338 views

Configuring IIS SSL for PCI

Is there a clear, concise list of of SSL settings available for IIS which will pass my PCI audit scanning? Preferably something for both IIS 6 and IIS 7 I'm currently running into BEAST issues but ...
4
votes
1answer
901 views

IIS 6.0 - mitigating BEAST

Recently, my PCI assessor informed me that my servers are vulnerable to BEAST and failed me. I did my homework and I want to change our webservers to prefer RC4 ciphers over CBC. I followed every ...
6
votes
3answers
1k views

IIS and SQLServer Hardening

long story short: I'm an engineer doing development, not administration. I have no direct access to the production server, so I can only tell the administration team the best configurations for ...
6
votes
7answers
4k views

What is the danger of hosting your SSL certificate yourself?

I have Active Directory Certificate Services on my server, which makes it possible for me to deliver an SSL certificate for the websites hosted on the same server. I know that normally, I need to ...
4
votes
2answers
4k views

Test website for SSL 2.0

I'm in the process of disabling SSLv2 on our IIS-based webserver and am wondering how I can test that SSLv2 is actually disabled? The website is still in development so not visible outside our ...
9
votes
2answers
584 views

How insecure is PowerShell Web Access?

Windows Server 2012 comes with a new feature that allows you to administrate the server via a PowerShell command line in any modern browser including Smartphones. This sounds cool and scary at the ...
3
votes
3answers
273 views

Security issues in a Dotnet Web application

I was required to fix three low risk security issues of a Web Application on a Windows 2003 server, NetFramework 2.0, IIS/6.0. It is tracert-able. That may assist for crackers to know network ...
2
votes
2answers
2k views

Is it harmful to allow http requests with very long querystrings in IIS?

I am developing a website with a search feature that could generate HTTP requests that are very long (up to 15,000) characters. However, IIS has a default limit of 2048 characters for querystrings. ...
2
votes
1answer
816 views

Encrypting configuration on shared IIS7 hosting that uses load balancing

When hosting a site on a cluster (or cloud configuration) we need to specify a Machine Key in the web.config file. This is needed to keep the machines in sync (often the first encounter with this is ...
5
votes
1answer
274 views

What is the security impact of changing PowerShell's PSLanguageMode?

A vendor is asking me to change the PSLanguageMode from within IIS on my Exchange server(s). What potential vulnerabilities am I opening myself up to? I'm surprised to see this option present within ...
1
vote
4answers
334 views

Should i use SSL for local access?

I have a web service which can be accessed only from websites hosted on the same server (i use 127.0.0.1 ip). Should i use SSL for the communications between the sites and the service, or would that ...
2
votes
1answer
2k views

What is the industry standard approach to disable weak ciphers to mitigate vulnerabilities?

Particularly this question is focused for Windows Server 2008 R2. I know the registry can be used to modify particular entries to disable weak ciphers if they are known. I saw this tool: ...
1
vote
1answer
2k views

What are the consequences of disabling ssl v2 and weak ciphers?

It is my understanding that IIS has ssl v2 enabled by default. Also, TLS 1.0, if enabled, allows for at least one known major vulnerability titled "beast attack". If the weak and vulnerable ciphers ...
1
vote
1answer
178 views

WEB long basic authorization string/Buffer Over Flow

I have a external user getting a weird error in the middle of using my website. The user authenticates, post a search for information, and then with the address of the search results page they get a ...
1
vote
1answer
1k views

IIS password protected website

I have a website built upon windows IIS and to use password to protect the website and disable anonymous logon to that website, the ONLY way is to disable the anonymous logon in IIS and use a windows ...
3
votes
2answers
191 views

Multiple extension vulnerability. Is this malicious file triggered during form preview or after it has been uploaded?

I'm looking at one of our compromised web server logs and we found that an attacker has uploaded a file with multiple extension. Below is the IIS log. The log format are as below. I have removed the ...
1
vote
2answers
157 views

What due diligence is required for HTTPModules that run within IIS?

I noticed some HTTP Handlers in my Web.config that appear to intercept HTTP traffic and manipulate it. Since there has already been an exploit with a similar component produced by Microsoft, what ...
3
votes
2answers
145 views

Website file being altered

I have recently had random spam links inserted into 3 ASP.NET websites. The links are inserted into the physical file so it is not SQL injection attack. The websites have very little in common other ...
-1
votes
1answer
661 views

IIS won't forward the logged on user credential to webservice request?

Ive enabled Windows authentication in my IIS. for the sample lets assume my Active directory username is \domain\John My task flow is like that : Iis won't forward the loged on user credential ...
1
vote
1answer
172 views

Does an exposed XMLRPC API in a web application pose a threat?

I'm given the assignment of testing one of our web-servers in regards to security. One of the servers run IIS 7 and its application relies extensively on XMLRPC calls. I found the API for those calls ...
10
votes
3answers
10k views

SSL handshake failure modes

In SSL if the handshake is not succesful, does it always end with a handshake alert? Or are there other ways to finish the SSL connection (acceptable by standard). I am asking this, because in an ...
5
votes
1answer
2k views

Does WebDAV pose an unreasonable risk in IIS7.5?

I'm looking for a bit of feedback on WebDAV, in this case running on IIS7.5. I've had an IBM Rational AppScan report come to me with a medium severity finding as a result of DAV entries in the ...
4
votes
3answers
363 views

Locking down web-based admin areas with personal SSL certificates

I've been tasked to setup a secure platform, where I've been asked to assign personal SSL certificates to administrators, and have the server only allow persons into the administration areas that have ...
2
votes
1answer
2k views

Securing WCF service with X.509 cert [duplicate]

Possible Duplicate: What is the difference between an x.509 “client certificate” and a normal SSL certificate? I'm getting really confused with WCF and certs. I have a WCF ...
3
votes
3answers
1k views

Need to secure (and add SSL?) RPC port 443 on Win2003 server

So I received an email from my system administrator who wants me to secure a server I own that seems to have a vulnerability in port 443 (which is Windows RPC over HTTPS). Disabling it I know causes ...
8
votes
3answers
310 views

Verify a website user is behind corporate firewall?

We have a public ecommerce website hosted at our datacenter onsite. For people who are within the corporate firewall hitting the website I want to display profiling information about the request of ...
4
votes
3answers
380 views

How can IT audit for installation of IIS Express?

IIS Express is a developer tool for Windows XP and higher which provides the full feature set of IIS, but without needing administrator rights. I've seen discussion by some developers who are ...
4
votes
2answers
623 views

how unsafe is it for Windows webserver IIS to have domain privileges

Normally in the past, I've managed that the production server only serves http(s) to the internet, and is isolated from it's database by a firewall which only allows database queries to travel. ...