A man-in-the-middle attack (MiTM) is an attack against a communication protocol where the attacker relays and modifies messages in transit. The parties believe they are talking to each other directly, but in fact both are talking to the attacker.

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LTE networks and MITM

2G would leave you vulnerable to spoofed base stations. 3G tried to somewhat fix that using mutual authentication. Now, I tried to check how LTE handles this but I couldn’t find any usefull ...
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2answers
75 views

Where can I practice MITM raw binary protocols?

I want to try practicing MITMing raw TCP binary protocols as well as MITMing HTTP protocol. What is the best way to do this? Are there any specific tools which help me do this? Like wireshark or ZAP ...
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1answer
124 views

How to prove iOS app is vulnerable to MiTM

I'm updating an iOS app and I want to prove that it is vulnerable to MiTM attack. I have set up Charles Proxy on my mac and configured the Simulator so that it trusts Charles CA Certificate, per ...
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2answers
141 views

How does police or somebody find out that an Arp Spoofing attack was done?

If you watch traffic in real time, you can see that an attacker doing a MiTM attack does ARP spoofing because MAC addresses will be duplicated, etc. And, well, you can see all MAC addresses and see ...
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1answer
709 views

Why is the deprecated SSL 2.0 protocol considered insecure and how can it be exploited?

I am making a presentation to the class about "SSL 2.0 deprecated protocol" and I really have no idea how this exploit is used or how the attacker can use this vul. I understand the impact of this ...
4
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1answer
78 views

Decline any custom ssl certificate in a mobile application

Consider the following scenario. Eve creates an access point in a public place. Alice connects to the AP via mobile phone and starts browsing the Web. Eve redirects Alice to a registration page and ...
3
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3answers
505 views

How to use my WiFi to inspect its user traffic and to run MiTM attacks?

As part of a security research, I need to make my WiFi open, and to inspect the traffic of the ones who connect to it. Additionally, I need to be able to change the content of the webpages they see, ...
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4answers
237 views

Is webRTC safe against man in the middle attacks?

We are implementing an open source software package (copay, a multisig bitcoin wallet), that uses peerJS, which uses webRTC to allow peer-to-peer communication between browsers. peerJS (and webRTC) ...
2
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1answer
105 views

MITM SSL connection

I read this article today about an SSL MITM. I am trying to understand this attack. This may be a naive question. My understanding is that the WebView sends a request to domain name, the server ...
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2answers
1k views

Is Apple's push notification service implementation vulnerable to a MitM attack

Recently(more info) I've spotted a strange message in the logs on my quite recent, fresh installation of OS X Mavericks 10.9.2 Apr 27 15:26:47 Ivans-MacBook-Pro.local apsd[194]: Unrecognized leaf ...
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2answers
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Unrecognized leaf certificate

Every 15 minutes or so I get this message in my system.log Apr 25 22:05:36 Ivans-MacBook-Pro.local apsd[194]: Unrecognized leaf certificate Apr 25 22:20:57 Ivans-MacBook-Pro.local apsd[194]: ...
0
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1answer
129 views

Detect possible router attack attemp

I have huge problem with my router: Sagem F@st 3202. Here are some Security log events: Inbound Traffic | Blocked - Default policy | TCP XX.XX.XX.XXX:80->XX.X.XX.XX:51707 on ppp0 ...
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2answers
166 views

What prevents me from using ARP poisoning to force a client to use HTTP?

So I was just thinking about how ARP poisoning can be used to intercept a clients request, forge an SSL cert, and send it back, with the caveat of not meeting certificate validation, but what if I ...
2
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1answer
280 views

Why is the SSL handshake not shown in Wireshark?

I am trying to figure out if some Android applications with login functions are vulnerable to man in the middle attacks or not. I have set up a MITM proxy (as an attacker) on my lubuntu machine and ...
3
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1answer
122 views

Is DNSSEC immune to stripping signatures?

In my opinion, it should be possible to forge DNS reply so it doesn't include DS/RRSIG/... parts for any request, thus bypassing DNSSEC validation of resolved domain. Is DNSSEC system immune to this ...
1
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1answer
324 views

Would there be MITM attack even fix the heartbleed vulnerability? [closed]

I have read this post askbuntu, the step to fix the heartbleed vulnerability almost: 1. upgrade openssl. 2. generte new keys. 3. revoke the old certificates. Some posts say attackers may have got ...
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2answers
143 views

Are SSL encrypted communications through a company network safe?

If I'm using Skype, Facebook, or another type of communication at my work, can the network administrator see my Skype and Facebook conversations, although its encrypted with SSL? I found this text: ...
9
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2answers
761 views

HTTPS login vs MITM attack

http://www.troyhunt.com/2013/05/your-login-form-posts-to-https-but-you.html My question is, if the threat is that someone controls your internet connection and can serve up bad login pages, couldn't ...
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1answer
244 views

Why is ettercap targetting the whole network?

I recently tried to do a MiTM attack on my network using ettercap. I have a router, two windows 7 machines : Host A and Host B, and Backtrack on a VM. In the ettercap window I added the router as ...
2
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0answers
69 views

Threats against website running without TLS but with PGP messages

Are there any threats against a web site that isn't running SSL but uses PGP to encrypt all information to the server (except session identifier) The information flow is as such: 1. Session ID set on ...
0
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1answer
30 views

Safely creating and communicating within a fully decentralized p2p network

I'm not entirely sure if this is the right place to ask this, and I'm also slightly fuzzy on how the p2p system works, so correct me if I'm wrong. I've been looking into the practical implications of ...
2
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1answer
59 views

Can IP phones be eavesdropped upon if administrator access is available?

I am interested in demonstrating an attack to my university's security team on IP phones installed at the university. The IP phone models are Siemens optipath410. Basically, using nmap, I identified ...
2
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3answers
108 views

Can MiTM and similar attacks be performed on separate networks

Okay, suppose that I have 2 computers: Computer A and Computer B, connected with this setup: A->switch->router->internet / B->router/ and the closest router to computer B is ...
14
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5answers
3k views

How safe is SSL? [closed]

If I got an SSL certificate for my website and use an SSL secured connection (HTTPS), is this safe enough to send my login and password data or should I add some encryption or hashing? And how safe ...
0
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1answer
172 views

MitM Attacks - Iptables?

I have looked for the answer to this question to no avail, apologies if I missed it. I would like to know how effective iptables would be against MitM attacks - in the following setup: ALLOW INPUT ...
0
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1answer
158 views

CAPTCHA Bypassing with Captcha Clipping Attack is Like MiTM between servers, Is that even Possible?

Sorry if this is a very amateur question. I was checking out some article regarding CAPTCHA bypassing. And I though this article seemed interesting ...
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0answers
91 views

MITM Attacks with Web GUI

I'm thinking of writing an application that communicates sensitive information (using Python, if that's relevant). Instead of using the standard GUI libraries (like GTK, Qt or wxWidgets), I was ...
2
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1answer
806 views

HMAC solution for a rest API

I'm trying to learn some things about REST apis and one of the topics that I'm having some trouble is security. I'm using angularjs for web interface ans slim framework for the php api. I've read ...
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1answer
107 views

Behavior of trusting a self signed SSL certificate

I have just deployed a Turnkey appliance which comes configured with a self signed certificate. This is a server that only I will be using, so I don't want to pay for a certificate. If I add this ...
15
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4answers
883 views

Is it possible to boot an encrypted server remotely and securely?

Imagine you have a server that is at a location which is not trustworthy. People might have physical access to the machine who are not supposed to look at the data stored on it. In this scenario I ...
0
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2answers
96 views

Protecting against/detecting a specific Man in the Middle attack

I'm working on a specific (hypothetical) situation, where I have two client machines attempting to perform a public key exchange, via a server. There's no possibility for a direct connection between ...
0
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1answer
92 views

Wouldn't transient cookies for session management increase effectiveness of MITM?

According to wikipedia, a transient cookie (aka session-cookie, in-memory cookie) is forgotten when the user closes the browser. These are also recommended for session cookies by OWASP. I've seen a ...
0
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1answer
78 views

Man in the middle and goto fail

My question is inspired by apples goto fail; bug. I am wondering if the bug is really as dangerous as it is propagated everywhere. The reason I am in doubt about that is that there is a MITM attack ...
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1answer
125 views

Legitimate use case of man-in-the-middle attack for DPI?

I am working on a device that should sit between the end-user and the server, and that will do deep packet inspection. It is basically a parental control node. This device will be sold to the user, so ...
2
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1answer
94 views

Does using Chrome bypass the Apple iOS gotofail bug ?

Does the recent certificate gotofail bug affect me if I'm running version 6 of iOS, but only use Chrome as my browser?
2
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0answers
226 views

What is going on with my download of the recent Apple security update?

The update in question is the Mavericks combined update which, among other things, claims to fix the recent SSL vulnerability/gaping hole. This issue really annoyed me, so I decided to procure ...
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0answers
23 views

Secure channels without web-of-trust or CA

I was reading about Impagliazzo's five worlds and I have some questions about cryptomania and minicrypt: What is difference between them? I cannot find one? How does cryptomaniac MitM protection work ...
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1answer
61 views

How much harm can an attacker do on the Diffie-Hellman exchange?

I'm looking at a system that uses an unprotected Diffie-Hellman exchange to negotiate a key for the session encryption. That Diffie-Hellman is not secure against man-in-the-middle attacks is textbook ...
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2answers
117 views

Proxy traffic via MITM script

I want to log and modify outbound traffic on a Linux machine. I currently have one program that sends requests out to the internet, I would like to process these requests and their responses via ...
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0answers
101 views

Does Diffie-Hellmann (DH) key exchange protocol lower Off-The-Record protocol (OTR) security level?

Off-the-Record protocol employes Diffie-Hellman key exchange protocol (DH). DH protocol does not provide authentication of the communicating parties and, according to many sources, is vulnerable to ...
2
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2answers
337 views

DNS cache poisoning in LAN without MITM

Many questions have already been asked about DNS cache poisoning (aka Kaminsky attack), however I couldn't find a clear answer to my question: Is DNS cache poisoning possible in a LAN, without ...
1
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1answer
87 views

Is it dangerous to sync my data with my personal server through unencrypted http?

Since Apple force iPhone users to use iCloud to sync contacts & calendar, I moved to a local ownCloud instance that works well. However, it would be more convenient if I could sync everywhere and ...
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2answers
120 views

Why do client certificates not protected against improper server certificate validation

I understand the question of client certs and MITM attacks has been asked several times, but I don't believe this specific scenario has been answered. It was my (seemingly incorrect) assumption, that ...
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2answers
437 views

Actually, isn't it bad to redirect http to https? [duplicate]

I have a two-part question about question #570288 over on ServerFault. Question: Is it bad to redirect http to https? Accepted answer (185 up-votes): [...] Hell no. It's very good. Part 1 ...
3
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2answers
159 views

How does a Short Authentication String (SAS) mitigate MITM attacks?

Reading about Silent Circle, and more specifically Silent Text, I learnt that by implementing SAS, the likelyhood of a MITM attack is greatly reduced. Could someone please explain how this works? If ...
0
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2answers
616 views

Is using an SSL Session ID along with a cookie based session verification more secure or not really?

I am using Django which is a web framework for Python. I love it but the session handling is cookie-based. Now over SSL I'm sure it's reasonably "secure" but I don't think there is any kind of fail ...
3
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2answers
359 views

Any MITM tool for forcing weak SSL cipher suite?

Let's say I'm trying to reverse engineering communctions between an Android app and a web server uing HTTPS. At beginning, I tried to do MITM using webmitm and a fake cert. But the app failed to ...
0
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1answer
2k views

Javascript http to https redirect - how vulnerable/how secure? [duplicate]

If I had a website http://site.com redirecting to https://site.com via javascript (with a HTTP/1.1 403 Forbidden), what are the attack vectors I could be vulnerable too? Why is this not a good ...
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5answers
219 views

Is it possible for an attacker to change my sent emails content before arrival?

I have a web application that sends "change password link" to user that wants to changhe his password. The link is something like this: http:// ...
3
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2answers
535 views

How a provider can tap an internet line even for SSL encrypted connection [duplicate]

I heard once from someone I trust, that the French governement is about to buy and certify a software to put on tap an internet line even for HTTPS connection. I don't really care about the legal ...