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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Why are there duplicated entries in the ARP table in a MitM attack?

All I read when it comes of detecting a man in the middle attack is that the ARP cache table will have duplicated entries for the attacker MAC address, but I can't find the reason why. The way I ...
5
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1answer
193 views

Does HTTPS protocol leak HTTP body length?

It seems that in a MITM attack, hackers may know the whole HTTPS packet size sent through the network (i.e. size of HTTP headers + HTTP body + overhead). Besides that, does the HTTPS protocol also ...
4
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1answer
87 views

MITM or Something Else?

Problem: When a given set of user devices (tablets/laptops) downloads files from a certain server from outside the host server's country, downloads are sporadically and routinely interrupted. The ...
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1answer
49 views

Opt into strict DNSSEC checking - does DNSSEC provide a way for a zone to request strict signature validation?

Is there a way for a domain good.com to promise that it will sign all of its DNS records, and that any unsigned records for any host *.good.com should be rejected? In other words, is there a way for ...
2
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1answer
46 views

Intercept pinned SSL connection with private key

Can I intercept https traffic that uses certificate pinning using fiddler if I have the private key of the cert? I am trying to intercept traffic between our mobile apps and API, and the mobile apps ...
2
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1answer
241 views

There might be a man in the middle attack against my server

I have a little $7.20/y VPS, and the fingerprint for the ECDSA key has changed three times on me. This time, it happened shortly after I reinstalled the server (same day, in fact.) I always disable ...
1
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1answer
56 views

How to capture all traffic from a new device?

I have a new IoT type of device that requires a wifi connection to work. I have no use for the device but I'd like to poke around it and learn more about it. How should I go about intercepting every ...
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1answer
34 views

Is it possible to DNS-spoof Exchange ActiveSync?

My company's SSL Certificate for basically all their websites and Activesync servers have expired long ago. For my upcoming meeting's sake I need to explain how this is very insecure. Unfortunately I ...
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1answer
34 views

Does ARP or DNS spoofing play a role when performing MITM in fake AP attacks?

I have a test environment, where I try some wireless hacking tools and approaches, and lately I have been interested in evil twin attacks. I created a fake AP using airbase-ng, and specified the IP ...
0
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1answer
90 views

Unencrypted connections between 2 people who use the same ISP, what's the risk?

What is the risk, man-in-the-middle or otherwise, of unencrypted connections between 2 people who use the same ISP, in the same city? If we assume the ISP (and the copper wire that leads to them) is ...
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1answer
1k views

Man-in-the-middle attack with public wifi

I'm using Charles to sniff out the traffic on my iPhone at Starbucks and for some reason it won't work with at&t wifi. Google Starbucks wifi does, however. I use my iPhone to connect to the same ...
6
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0answers
96 views

SSL Certificate MITM Attack for Expired Domains

Let's say I have a domain name, like mysupercoolproduct.com. I buy a 2 year SSL certificate for it, and then I am negligent and the domain gets snatched up by someone else. I still have a valid SSL ...
3
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0answers
72 views

If I install a certificate for the purposes of logging into a Wifi connection, is it still safe?

There are some wifi networks (large universities for example) which use HTTPS to get to a login page, and in order to verify that they have not been spoofed, provide the certificate ahead of time (i.e....
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0answers
290 views

Routing Protocol Encryption

As far as I know 'newer' versions of routing protocols support authentication between routers. What about encryption and integrity checks? Some implementations like this one from Cisco use MD5, which ...
2
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0answers
72 views

If I clear my browsing data, is HSTS protection removed?

I've seen that if I delete cookies and other data on Google Chrome, SSLStrip+ works successfully on those web sites that are not included in the browser list. Is it because HSTS data is cleared too?
2
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0answers
42 views

Chrome: Watch for modified https-certificates

I read a lot about security of https and possible MITM attacks lately. For me it seems there is only possible way to make a https-MITM attack: When a MITM exchanges the shipped https-certificate and ...
2
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0answers
73 views

What are the formal methods to analyze Authentication Protocol

I designed an authentication protocol for consumer-producer applications, which barrows features from Kerberos and Tesla. To check the strength of protocol I considered different well known attacks ...
2
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0answers
273 views

ssh dns spoofing warning - possible investigation?

Recently the router my ISP provided started to work suspiciously. At times the wireless connection from my devices to the router breaks and the router stops responding while sometimes the connection ...
2
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0answers
283 views

Mitigating the risk of disabling EPA on ADFS

I'm currently investigating the deployment of an Active Directory Federation Services (ADFS) server for providing Single Sign-on for various services. By default, ADFS enables support for Extended ...
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0answers
50 views

How to perform a MITM between a server and a client program whose local ports are randomly spawned?

I usually used Burp or similar tools for browser-based communications. The client program in question doesn't offer a proxy option to be configured. So I can't use Burp in this case, besides ports are ...
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0answers
21 views

How can I protect against cross-build injection and other dependancy management threats in Play Framework?

I am using Play Framework's inbuilt dependancy management to download a library (HTMLUnit), to do this I add the dependancy to the build.sbt file like so: libraryDependencies += "net.sourceforge....
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0answers
39 views

Transmitted sensitive user data

At the moment, I have set up mitmproxy and can record all HTTP/HTTPS communications between the client and server. For research purposes I am looking to find a way to detect potential leakage of ...
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0answers
58 views

SSLStrip not working on custom ports

I have been using sslstrip for a while and it works fine on websites on which HSTS is not enabled. However when the SSL server is running on some custom ports sslstrip fails. eg: For links like https:/...
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0answers
124 views

How to recreate the Freak attack?

Currently I am trying to recreate the Freak attack on a virtual machine. For this purpose I set up a Linux Mint 17.1 system with Apache 2.4.7 (with a self signed certificate) and OpenSSL 1.0.1f. I ...
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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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0answers
256 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 ...
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0answers
155 views

Are VPNs using shared secret susceptible to trivial MITM attacks

I'm looking at a few VPN providers and many seem to offer L2TP VPN but they seem to share their shared secrets publicly on their website, for example : Goldenfrog https://www.goldenfrog.com/support/...
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0answers
382 views

forcing a traffic redirect?

I am trying to get my machines to be force through a MiTM and the MiTM to redirect them to a server of my choice (which happens to be the MiTM on port 17002) I am running ip tables: sudo iptables -t ...
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0answers
521 views

Does ZRTP provide useful protection, given that the SAS is not verified?

Firstly, some important backstory. I'm producing a corporate version of an IM/VOIP/Screensharing client using the Open Source Jitsi. We are going to be using a central server and have already ...
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0answers
23 views

Weird connection error prompts, Rootkits & MitM?

Can someone give me insight on these connection error prompts? https://imgur.com/a/FEHJj My internet kept reconnecting two weeks ago and I couldn't access the internet until I performed a hard reset ...
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0answers
44 views

Would a hard-coded public key or fingerprint protect against MITM?

Say there's a server and a client. Normally to connect and establish an end-to-end encrypted session, they'd have to carry out key exchange, which potentially gives an attacker the opportunity to ...
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0answers
115 views

Secure Handshake and register for Auth

The registration The Start - pre-authentication Let's assume there are Alice and Bob. They know each others public keys and each of them generates a random string - Bob's Bobkey and Alice's Alicekey....
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35 views

Does Apple CloudKit prevent 3rd party apps from MITM'ing the API?

One of the issues with SnapChat is that some users were using unauthorized apps to access the backend API, which then allowed for some application level security to be compromised. I am of the ...
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0answers
46 views

How to prevent injection of Layered Service Provider (LSP) module in application with kernel-level?

LSP technology is often exploited by spyware and adware programs in order to intercept the communication across the Internet. For example, malware may insert itself as an LSP in the network stack ...
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0answers
96 views

Intermediate proxy intercepting my SSL data between my computer and the ISP

I did a simple scan of my linux firewall today using grc.com's shieldsup on their website (https://www.grc.com/x/ne.dll?bh0bkyd20). Previously when doing this it shows I have full stealth but today it ...
0
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0answers
71 views

How does STK (Short Term Key) generation work in a Bluetooth Low Energy?

I want to understand how STK (Short Term Key) generation works in a Bluetooth Low Energy. I don't want to go deep at a packets exchange level of a Security Manager Protocol, but I want to understand ...
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0answers
303 views

Is facebook to facebook (mobile application call ) encrypted?

I understand facebook uses WebRtc to send voice data packet in network if any one end client is on the browser. Use of DTLS packets can be seen in captured (wireshark) file. But in case of mobile app ...
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0answers
311 views

Victim loses Internet connection during MITM attack

I tried to do MITM attack on my network. I enabled ettercap, marked my router as TARGET1 and my second computer as TARGET2. Then I enabled 'ARP Spoofing'. I do not know why - but after this operation ...