Questions tagged [http]

Definition: HTTP - the Hypertext Transfer Protocol - provides a standard for Web browsers and servers to communicate. The definition of HTTP is a technical specification of a network protocol that software must implement. HTTP is an application layer network protocol built on top of TCP. HTTP clients (such as Web browsers) and servers communicate via HTTP request and response messages. The three main HTTP message types are GET, POST, and HEAD.

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WiFi Fingerprinting RFC2617 Linux Device Cannot Unauthenticate Unless AP Password Changes

There is a Cisco WiFi Access Point in the office that is intended for guests. It is an open network in that you can associate without providing a password with the SSID. It supports RFC2617 and so the ...
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Cross Origin Resource Sharing question

I have some mockup html/javascript on my desktop, I made an ajax GET call to: http://www.bungie.net/platform/Destiny/TigerPSN/Account/4611686018429149347/Character/2305843009215132906/Activities/ ...
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How Can Exploit Xss and Sqli via HTTP Verb Tampering?

I was reading a paper about 'HTTP Verb Tampering' here: https://blog.jeremiahgrossman.com/2008/06/what-you-need-to-know-about-http-verb.html The author said: 2) HTTP Verb tampering is generally ...
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HTML Injection to blind SSRF testing retrieves only DNS Query

I recently came across an application that was vulnerable to HTML injection on the invite function. When I insert <img src="image.jpg"> the image got rendered on the mail I received. I ...
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Unable to start reverse shell over HTTP

I am able to get a reverse shell working locally over TCP, but failing to trigger it remotely over HTTP. Locally over TCP: Attacker terminal runs netcat to listen for a connection over port 8000: nc -...
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Bruteforce https post using single tcp connection

So I've tried bruteforcing my server using thc-hydra's https-post-form, but it floods the server very quickly and the requests start timing out. However, If I go through the browser where the HTTP ...
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1answer
1k views

Bettercap 2.x SSLStrip Is Not Converting Links

I posted this before. I am creating a new post because of all the changes I would need to [edit] out. I have the latest version of bettercap. I have the latest version of Kali Linux using the latest ...
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336 views

Random Alphabetical String Added to URL

I originally asked this question over at Stack Overflow, but someone there suggested asking here because it might be possible that something malicious may be causing the following issue: Users have ...
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2k views

how to fix Out-of-band resource load (HTTP) issue identified by BURP scan

I have Salesforce application which is using my web application hosted in one of our customer's server (IIS 8.0). BURP Scan has identified one issue in my web application. Issue is something like ...
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Concerns when passing all OPTIONS requests through authorization proxy gateway

I have a React based application which uses RESTful services on backend distributed on private network. To communicate with such services using AJAX, client application sends all its request through ...
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Assymetric auth like AWS4-HMAC-SHA256

I wondered if there exists a defined mechanism similar to AWS4-HMAC-SHA256 (as a scheme in Authorization HTTP header), but using asymmetric algorithm, probably ed25519, and how secure it would be to ...
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622 views

HMAC authenticated API calls with multipart/form-data file uploads

We have an existing API where 3rd parties can push data. The API calls are authenticated with HMAC using the same scheme as described in Ruby's ApiAuth library which I use to verify signed requests. ...
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49 views

What does “connection” mean in context of request smuggling

I recently read about request smuggling. This is a very interesting attack that I didn't know about. A vulnerability to this was recently discovered at Slack, disclosed responsibly and a bounty was ...
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Arbitrary query parameter reflected in server response header. Is it exploitable?

SCENARIO: If I send requests like these: http://site.com/page?safe_param=1?my_arbitrary_param=2 The server responds with a normal HTTP response but within common headers it includes also the ...
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57 views

Can server-side caching misconfiguration lead to stolen logins?

If a webapp sends Cache-Control: private it shouldn't be cached for example with nginx proxy_cache. What could happen if it was cached anyhow? Could another visitor see the personalized login of ...
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Why are browsers making PUT requests for static assets on my site?

Our site hosts static assets at /assets/…. In debugging a font-related issue, I looked through our logs for unusual activity. I found a bunch of requests like these method path ...
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Am i being MITMed?

Lately i was experiencing weird behavour from some big websites. More specifically, when i normally tried to connect to facebook, i would be greeted with this login page: I have placed these with ...
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482 views

Http Content-Length too long - Time Out

I was recently going through the HTTP Desync attack presented here: https://portswigger.net/research/http-desync-attacks-request-smuggling-reborn This raised one question concerning the way the HTTP ...
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1answer
852 views

HTTP request smuggling, basic TE.CL vulnerability

Im trying to learn about http request smuggling and Im trying out the labs for burp suite. Im stuck on the TE.CL vulnerability, Ive clicked on the solution (see below:https://portswigger.net/web-...
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93 views

Cross site security for public REST API

This seems a common use case, but I have not been able to find a satisfactory answer. We have a public REST API, which we want 3rd parties to be able to write their own Progressive Web Applications ...
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Security risks on returning encrypted JSON web token without prior authentication

I am architecting a passwordless REST API where public/private keys are the primary form of authentication. In order to create a new session you must prove that you hold the private key to the public ...
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148 views

How to limit web API microservice communication to specific list of machines?

I have an PHP API that I want to be consumed only by one static website. However the HTTP is not secure as from what I suspect any header can be spoofed (IP - I may be wrong here, domain name, and so ...
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How is Indonesia blocking images in e2ee applications?

Indonesia's minister in communication and informatics supposedly blocked the sending of images and videos through social media from 22nd May until 25th May, in order to prevent hoaxes from spreading ...
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116 views

HTTP body E2E encryption protocol

I have 2 servers that communicate each other in HTTP and they are both behind an API gateway. Between the servers and their API gateways the communication is in HTTPS with mutual authentication using ...
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37 views

Origin VS Authority and Domain certificates and Unique IPs

Disclaimer, I am new to InformationSecurity, so sorry if I not following rules as good as expected. I asked this post on stackOverflow, and I was suggested to transfer it here So far I get: Origin = ...
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293 views

How to bypass NTLM HTTP authentication?

Is there any way to bypass HTTP authentication rather than brute-forcing ?
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Bloom filter to prevent replay attacks in signed HTTP requests

I'm thinking about an authentication sheme of a REST API in a setting where the only thing the server stores about a client, is their public key (the asymmetric encryption scheme should not matter). ...
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264 views

Hide data from wireshark on localhost

Assuming you're working with an old network protocol, or insecure/unencrypted protocol (HTTP for example), is there a way to make it difficult for network sniffers from capturing the packets? An MITM ...
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94 views

Security of AWS Lambda Communicating to Non-HTTPS API

Wondering what attacks might look like in the following scenario. I have a web service that pings an AWS lambda (behind API gateway), which makes a couple of transactions (sends email, adds to ...
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Why doesn't a CORS preflight request cause another?

According to MDN documentation, every non-simple request is doomed to fall into an infinite recursion: I want to send a non-simple CORS request (with the verb PUT e.g.) My browser tries to send a ...
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441 views

THC Hydra false positives on Foscam login

I bought a Foscam C1 Lite this week and I want to try to brute force the login page with THC hydra. But currently I am getting false positives with the following command: hydra -s 88 -l user -P ...
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Invalid certificate error appears on my web server for 10 minutes and then disappears

I have a raspberry pi that hosts a web server and has a DDNS registered through no-ip. I just had an issue connecting to my webserver because a certificate appeared to be installed on this server that ...
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HTTP security headers for native and webview based mobile applications

OWASP Security Headers Project recommends the following security headers for web applications. Out of the following which headers are relevant to mobile applications? HTTP Strict Transport Security (...
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No fields captured in BurpSuite

I am using burpsuite to bruteforce my routers login form, but I have encountered an issue... When I enter something into the password field, BurpSuite shows the request, but not what was entered. For ...
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Is the appearance of “Action Not Found” and a list of tried URIs a security concern in Play?

The Routing in Play documentation has been read and multiple code samples have been run including this one. When one navigates to an unknown URI it returns a list of tried URIs: Expected outcome The ...
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Bizarre HTTP requests to VPS, former malware command and control server?

I just bought a new VPS with Linode. I installed Apache and noticed some very strange behavior that I have been seeing consistently throughout the logs. So basically, I keep receiving stranger HTTP ...
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MAC spoofing under a OPN Access point HTTP does not work

I want to do a demo on the wifi security. So, I have one Wifi router and two client. I configured my router without security (OPN) and with a MAC filter. One of the two client is connected to the ...
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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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iSniff-GPS: Certificate Verification

iSniff-GPS I came across an interesting sounding project on GitHub, called iSniff-GPS. I decided to check it out, but i experienced some issues when trying to use the web interface. Instructions ...
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Is there a “smart cache” device which provides cache if authorized?

Is there an implementation of a HTTP (or decoded HTTPS) optimization device which would allow for "smart caching" - i.e. the ability to release some cached content (initially transferred by someone ...
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Can user identifying information in Dropbox be derived from subscription data?

I've noticed that my Dropbox installation really loves sending unencrypted information over the net including a "user_id" and it's user-agent. What i want to know is if it's possible at all to ...
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Is my approach to anonymous certificate based HTTP(s) authentication and secure private messaging sound?

I'm trying to work out a somewhat anonymous secure messaging system, and was hoping someone could validate my overall approach. Keep in mind, this all takes place over HTTPS. Authentication While ...
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Linux Hydra issue - random correct password success

I have an issue with Hydra when I use it. I have tried the same command lines given in guides directly supported by the Damn Vulnerable Web Application (DVWA) v1.8. Ok so.. here is my attempt output....
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How to filter secure (HTTPS) websites by URL with regular expression?

I need to block access to certain pages on a website using regular expression and/or wildcard. The site uses https and therefore cannot be blocked using regular parental control filters (this is ...
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HTTP Headers: Document Policy vs. Permissions-Policy/Feature-Policy

I'm checking the options to harden my web app by setting the appropriate HTTP headers. Besides the Content Security Policy (CSP) there are two another approaches: Document Policy and Permissions-...
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What are the security risks of trace context propagation headers?

We are implementing zipkin tracing in our product and have some hesitation about accepting and returning the propagation headers for publicly accessible http requests. The zipkin server itself is not ...
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Which security headers should be sent with static files such as css/js/images

Of the security headers listed here: https://owasp.org/www-project-secure-headers/ which ones should be sent with static files (css, js, images etc) and what does setting them each achieve in that ...
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Is this HTTP authorization token secure?

I am new to backend development and read about Authorization methods such as Basic, Bearer and OAuth 2.0. I haven't use any of these directly, but used a token based implementation. User logs in with ...
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How to prevent HTTP header injection attack in J2EE Web application? Is there any library (Maven dependency) available for this purpose?

My J2EE application is vulnerable to HTTP header injection attack. I want to make it secure from this vulnerability. Also, I am searching if any library (Maven dependency) available for this.
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How to understand a single packet embedded with multiple requests?

When I read Multi VERB Single Request: This Attack is also a variation of the Excessive Verb Attack strategy. The attacking BOT creates multiple HTTP requests, not by issuing them one after another ...