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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Pentesting my Own Server File Upload

I recently created my own IIS server (set on version 7.5) and I was going through checks to make sure my webdav is not vulnerable. My users need to upload files to their individual accounts and can ...
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1answer
372 views

IIS 7.5 WebDav Security Issues with Students

Hello Currently I am setting up a server for college students (this includes tech-savy IT students as well) and I will be using IIS 7.5 with Webdav for the students to access their files from home. ...
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1answer
314 views

How does IIS persist identity credentials? Does it create any security issues?

We want to implement a feature similar to IIS in how it remembers user configured usernames and passwords. As I understand it, when you configure IIS to use a set of credentials for an app pool ...
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2answers
1k views

DirBuster request found in my log files

I was going through the logs of my application hosted on IIS 7.5. I found a request like the following: 2013-08-19 08:14:10 192.168.200... HEAD //DSL/ - 80 - 115.114.27... ...
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1answer
364 views

Possible to detect and log CORS and preflight requests in IIS?

I'd like to track and understand if CORS/cross site requests are hitting my website, and if they are succeeding or failing. My goal is to understand if clients are following our documentation ...
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2answers
723 views

Implications of using domain\computername$ account to serve SQL data to IIS

One of our coders is trying to get Windows Authentication to work on a new web app that he's developing (.Net 4.0, MVC, via IIS 7.0/7.5). The application connects to a SQL Server database back-end ...
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1answer
191 views

Clarification on Digital Certificates

I used the makecert tool to create: self-signed certificate client certificate These are the commands I used: makecert -n "CN=MatthewCA" -r -sv MatthewCA.pvk MatthewCA.cer **for self signed ...
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1answer
314 views

Sending Digital Certificates

I used the makecert tool in order to create: a self-signed certificate a server certificate using the self-signed certificate a client certificate using the self-signed certificate I then ...
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2answers
791 views

IIS 7.5 impersonation threat?

I am using IIS 7.5 and I want to impersonate users for my different applications in an intranet environnement. To do so, I am considering using the asp.net mechanism with the user/password in the ...
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2answers
327 views

With full access to the disk of an IIS web server, could you access the database server?

Here is a theoretical setup: You have a web server running Windows Server with IIS You have a website running here which connects to a database This website can start automatically when the server ...
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2answers
2k views

For TLS how to instruct IIS 7 to include Intermediate CAs to be included in the Certificate Request frame?

I am observing an issue in which the TLS handshake is failing between a Java Client and a web service hosted under IIS 7. Upon wiresharking the attempt it seems that the problem is the list of ...
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1answer
159 views

404s with /like and /undefined

We recently got hacked and after cleaning the virus from our machine we pushed out site to go through cloudflare. Although I've noticed scanning attempts on the site have dropped we do for some reason ...
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3answers
3k views

What is the next step of this file upload attack?

Yesterday I discovered somebody had uploaded this PHP code to my server as a .jpg file via my asp.net MVC application's "Upload your profile picture" form. I believe the attack was unsuccessful for a ...
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2answers
430 views

Securing Java web services called by web site in DMZ using web services for communication

Suppose you have an application running Java web services in Apache Axis 2. Specifically, these are JAX-WS (Java API for XML-Based Web Services). Currently these web services are on the same Windows ...
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2answers
406 views

What is a better practice - RSA Encryption vs Windows authentication

I have two machines running windows OS with IIS and window OS with MS SQL. In the production web.config file I configure the IIS to use a user name and password when connecting to the DB and then I ...
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0answers
740 views

SSL Certificate Authentication Issue 403.7 [closed]

I have been trying to configure SSL for authentication and was unable to resolve this error 403.7 on IIS 7.5 windows 2008r2 vps server. I would like to give access to few computers where client ...
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3answers
11k 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: ...
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3answers
627 views

How to increase Windows PowerShell WebAccess security?

What are some recommended techniques to improve the security of powershell? Google returns many articles about powershell security like these: PowerShell’s Security Guiding Principles TechNet Edge ...
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1answer
535 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 ...
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1answer
1k 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 ...
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1answer
3k views

What are the security concerns with turning off Extended protection for authentication in IIS7 on ADFS?

In setting up SSO for Office 365, in order to make Chrome and Firefox access services on the Intranet, Extended Protection for Authentication must be disabled on the ADFS sever. As the ADFS server is ...
3
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3answers
386 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 ...
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2answers
843 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 ...
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2answers
5k 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 ...
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2answers
3k 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. ...
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6answers
7k views

Is this a ViewState attack?

I recently found this request in the event log: Client IP: 193.203.XX.XX Port: 53080 User-Agent: Mozilla/4.0 (compatible; Synapse) ViewState: -1' Referer: Now, the ViewState: -1' part combined ...
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4answers
519 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 ...
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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: ...
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1answer
3k 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 ...
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1answer
1k 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 ...
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1answer
181 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 ...
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5answers
40k views

How to fix SSL 2.0 and BEAST on IIS

As you can see on this post TeamMentor.net vulnerable to BEAST and SSL 2.0, now what? the app I'm currently development got flagged for SSL 2.0 and BEAST by SSL Labs. I'm using IIS 7.0 with the ...
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6answers
2k views

weird visitors to my website

For the last three months I have thousands of real visitors to a single page on my website. Those visits are recorded in Google Analytics and count as page views in adsense reports, but they are fake: ...
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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 ...
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7answers
8k 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 ...
3
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2answers
219 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 ...
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1answer
358 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 ...
2
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1answer
209 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 ...
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2answers
169 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 ...
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2answers
176 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 ...
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1answer
920 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
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1answer
238 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 ...
4
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3answers
494 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 ...
3
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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
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3answers
2k 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
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3answers
434 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 ...
7
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2answers
2k views

IIS IP Address Restriction - can I rely on it online?

I've been told that I might have more luck posting here than on Stack Exchange, so here goes: I'm looking for a way to lock down a 3rd party application in IIS. It's a web service, so there's no ...
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3answers
17k 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 ...
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3answers
441 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
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2answers
992 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. ...