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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A certificate site name mismatch when using preinstalled Toshiba software? (Superfish?)

On my Toshiba laptop there are a variety of different Toshiba programs that came pre-installed. Many of them are some sort of utility, optimizer, checkup, and update kind of programs that I guess are ...
0
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0answers
30 views

How can MITM be performed in WebRTC?

From what I could tell, certificates are self-signed. When A wants to call B, after they finish relaying data to server, they initiate communication with each other. Certificates are self-signed, ...
2
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2answers
88 views

Is VPN the best solution against man-in-the-middle attack? [on hold]

I'm looking for the best way to protect my enterprise against man in the middle attacks, because a lot of people connect to the same network. So I was thinking of creating a VPN. Is this really the ...
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38 views

hsts bypass with sslstrip2 + dns2proxy

I am trying to understand how to bypass HSTS protection. I've read about tools by LeonardoNve ( https://github.com/LeonardoNve/sslstrip2 and https://github.com/LeonardoNve/dns2proxy ). But I quite ...
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0answers
12 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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2answers
77 views

What are you doing if you notice a MITM attack against a Linux server? [closed]

I got this question at a job interview, but I did not know the answer. I think they expected some shell command or packages, which can help react to the attack. Assume that, you are a system admin and ...
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1answer
22 views

Choosing a cipher and MAC for an SSH connection

The cipher and mac selection according to this are in some sort of order in a config file. How do the client and server know that they are using the same ones though? Is this information exchanged in ...
1
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1answer
92 views

Why crack WEP or WPA/WPA2 PSK when it can be sniffed through monitor mode capture?

I am pretty new to the domain of wireless security and am trying to understand the various techniques used for compromising wireless networks. There are a few things that I am not able to co-relate ...
1
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1answer
33 views

User Key pairs and Man-in-the-middle issues

I'm trying to wrap my head around how to exchange user's keys with a server. Maybe during sign-up a JS applet generates a key-pair for the user. These keys would be used for signing subsequent ...
1
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2answers
109 views

Mitigation against MITM at Starbucks

Free public WiFi, for example Starbucks, is convenient. I wonder if there is a way to verify that a laptop has connected to the Starbucks wireless router and not to a man in the middle that tricked ...
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2answers
34 views

How can I detect mode interface of other machine is promiscuous [closed]

I have a project that is to protect my box from attack man in the middle arp poison. I should detect if interface mode of other machine is promiscuous. I must write script python or command linux.
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14 views

Combining Hash Visualisation (VisualHostKey) and SiteKey to prevent MITM

TL;DR Skip to the No SiteKey + Plugin if you don't want to read this whole thing. VisualHostKey shows an SSH hash like this: # Host github.com found: line 53 type RSA 2048 ...
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1answer
37 views

Combining wildcard and subdomain-specific SSL certificates

Not quite sure which Google terms to use to find the answer, so I thought I'd ask it here, presented as a scenario: Say you have a corporate entity (Example Co) with a wildcard SSL cert issued for ...
6
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1answer
862 views

Is Man-In-The-Middle necessary for a CA to read HTTP plaintext?

Although I understand the basic theory behind certificates and asymmetric cryptography, I'm not quite sure on the details of the X.509 protocol. I'm wondering what attacker model a given CA requires ...
1
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1answer
63 views

How to properly test that an OpenVPN connection is secured?

I have a router (ASUS RT-AC66U) with an embedded OpenVPN server. I'm able to successfully connect to the OpenVPN on the router, as well as, access internal services in my home network; However, ...
0
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1answer
15 views

dm-crypt over iSCSI

I recently bought a NAS that supports iSCSI. I'd like to create a new LUN, and then from my computer, create a new dm-crypt/LUKS device on it and back up to it. Is this secure? Could the data or ...
22
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6answers
3k views

Possibility to sniff HTTPS traffic on devices without installing a certificate

My goal is to sniff the HTTPS traffic of some digital devices (AppleTV, game consoles, etc.), and decrypt the HTTPS packets in my local network. I cannot figure out a way by using some HTTPS ...
9
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4answers
4k views

In light of the FREAK TLS vulnerability, why do so many servers still offer RSA-EXPORT keys?

Ars Technica is reporting on a new attack against HTTPS. Called FREAK, the devices reported as vulnerable include iPhones, Android devices, and Macs running OS X. The attack (as has been clarified ...
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2answers
80 views

Can a school legally access an account that a student logged in to at school? [closed]

Is this scenario legal, A school has a few public computers that can be used. The only browsers that are installed are chrome and internet explorer, and the entire network is man-in-the-middled. ...
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0answers
21 views

Usefulness of checking MS-CHAP-Challenge by TTLS Server

I've spotted what may be a "missed opportunity" in the EAP-TTLS specification for "Challenge"-based authentication protocols (for instance MS-CHAP-V2). The client initiates MS-CHAP-V2 by tunneling ...
4
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4answers
95 views

What's to stop someone from just MITMing a checksum?

A lot of sites offer MD5 or SHA sums to verify the validity of your download, but why do some things rely almost entirely on this? Is there anything in place to prevent people from just replacing ...
0
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2answers
59 views

Is it possible to take back the control from an MITM in progress? [closed]

I heard that MITM also involves DNS poisoning, which basically tells the Net to take a different route than it was supposed to go.. (I'm not sure if my interpretation is correct..) Given there is an ...
22
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3answers
2k views

Superfish vs. Corporate MITM

I work for a consulting company, and I have been implementing a tool from a security vendor, which is a cloud proxy for all user traffic. It will perform malware scanning and filtering of all web ...
0
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1answer
77 views

Public WiFi behavior

Here's an observation: My apartment offers free wifi around the social congregation areas. It is not encrypted BUT as I have observed, each connecting device is confined to its own VLAN (based on MAC ...
9
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1answer
335 views

Kaspersky Antivirus “secure connection scan” as broken as Superfish?

I've read a lot about Superfish (and similar ad-ware) lately and I basically understand the vulnerability to MITM attacks. But I'm actually wondering if the "secure connection scan" by Kaspersky ...
2
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1answer
184 views

Intercepting HTTPS Android app traffic

I'm trying to intercept Android application traffic from my Android phone....Basically what worked before was that i had simply installed fiddler proxy on my PC, exported the root certificate (and ...
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2answers
101 views

How do certificates stop this man in the middle attack?

Alice and Bob are trying to set up a secure conversation, but unknown to them in the middle is Eve, who can intercept and modify all packets sent between them. The communication goes as follows: ...
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2answers
59 views

Two-way encryption that can be nested?

In building a security system, I'm looking to prevent 'man-in-the-middle' attacks in a two-way encryption system, using the following setup: A sends B a message, encrypted with code 1 B sends it ...
0
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0answers
70 views

Is it possible to trick a CA into signing a certificate by intercepting on SSL domain validation email?

From my understanding domain validation certificate are verified by receiving an email on some special email addresses on the domain (e.g. postmaster@example.com, admin@example.com) or by sending on ...
2
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2answers
195 views

If your company/university requires you to install root certificates what protects you from man in the middle attacks?

Let's say that I'm on a university (or company) network that requires you to install a root certificate to connect to their website. Now let's say that you trust these people but not anybody else. Is ...
0
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1answer
70 views

How does the DNS-spoofer know the original destination of the packet?

It's perhaps my lack of deeper knowledge of how the DNS, NAT or TCP works, but I have been thinking about the following scenario and can't figure out the following problem which arises in DNS-spoofing ...
0
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0answers
60 views

Man in the middle attack, bridging wlan interface to virtual wired interface at0

I'm trying to execute a Man in the Middle attack on my mobile phone, I have two wireless cards, one inbuilt in the laptop, running AR9285 atheros drivers, the 2nd is an Alfa AWUS036NHA card with an ...
0
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1answer
62 views

Arp Spoofing Causing Dropped Connections

I have had a lecture today based on Arp Spoofing. However, i can not get it to work. Scenario: My laptop - running kali Target laptop (housemate - with permission) - running windows 8 Commands ...
2
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1answer
52 views

How to prevent browser from rendering malacious content if request or response is hacked

We are currently working on OWASP security fixes and we identified one attack scenario for which we are trying to figure out a possible solution: User hits a valid HTTPRequest to our application. ...
3
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1answer
46 views

IKEv2 Authentication - why/how does it work?

I am currently trying to understand the IKEv2 protocol which is used for IPsec and am wondering why/how the authentication process works. From my understanding, in the prior IKE_SA_INIT exchange, the ...
0
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3answers
123 views

Decrypting SSL over a Mobile Network

I work for a large company and we are trying to judge the safety of some proprietary information that is being sent and received in a new application we are developing. After our initial testing we ...
0
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1answer
45 views

WEP man in the middle

my workplace is currently using a wireless router that is secured using WEP. If I connect a laptop to the wireless router with a cable, would someone that has cracked the password still be able to ...
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34 views

Application of digital watermarking for session hijack

I know digital watermarking can protect the media from man-in-middle and replay attack. Is it good also for session hijack attack or phishing attack?
0
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1answer
49 views

Bogus HostName Causing Suspicion of Man In The Middle

I have servers on a LAN reporting my laptop with a bogus hostname. This is making me suspect a man in the middle attack. Here are some details: From an Ubuntu Linux 14.04 laptop, I logged into an ...
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0answers
36 views

Is it possible to perform one-way OTR MITM?

Here's something that is bugging me recently: suppose that me and my friend establish an OTR session and - as a result of that - DH key exchange is performed. My friend verifies my key, but I cannot ...
2
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1answer
134 views

Can a corporate proxy downgrade an SSL handshake?

At work, I'm behind an NTLM Proxy. When the SSL Poodle flaw came out, I hardened the configuration of my private server, and found out that even if the client and server shared common ciphers, some ...
0
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1answer
77 views

How to incorporate the man-in-the-middle

I am designing a web-based back-end for an online service. The service could support web based portals and mobile apps as front end. But I am stuck on how to support third-party, i.e untrusted, web ...
2
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2answers
92 views

How is this MITM attack being performed and what steps can I take against it?

Today, when I tried to access the internet (google on HTTPS), my browser (Google Chrome) gave me the following error: I am on my own home Wi-Fi, which has WEP. When I tried to reload google on ...
5
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1answer
382 views

Can a malicious Tor exit node perform a HTTPS man-in-the-middle attack to see/modify your HTTPS traffic?

Let's say I am browsing the Internet using Tor - visiting https://example.com/login.php - and the NSA is operating the Tor exit node which I am currently routed to use. Can that NSA exit relay swap ...
0
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1answer
81 views

Compromised submarine cables and the consequences to internet?

I recently read an article that Google wants to build a submarine cable connecting to my country supposedly to increase overall speed and while I hope my government will never allow this kind of thing ...
0
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1answer
99 views

What does this mismatching SSL certificate hint at?

I'm currently visiting China, and I use a well known VPN service for both my laptop and my phone. Every now and then, I get certificate errors when using my phone when I'm connected to a VPN, but ...
2
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1answer
312 views

What is the difference between ARP and ICMP MITM attack?

I want to know the difference between arp and icmp mitm attacks and why someone would use icmp over arp. I am looking for an educated response comprised of the principles behind both attacks, their ...
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1answer
42 views

Origins of the “man-in-the-middle” analysis

Who first formulated communication security in terms of the "man in the middle" attacks? The earliest source I have so far is: Larsen, Gerald H. “Software: A Qualitative Assessment, or The Man in ...
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2answers
134 views

Can First Hop Man in the Middle be Defeated with TOR or VPN?

I was reading this article about a certain in flight WiFi provider issuing fake SSL certificates for Google. This doesn't really surprise me all that much since I'm well aware of the concept of ...
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2answers
66 views

How do certificates work in protecting against a man-in-the-middle attack? [duplicate]

As I understand it, if Alice and Bob wants to communicate securely, they must first agree on the protocols that will be used. Then they must confirm that they are indeed communicating with each other. ...