Ruby On Rails DoubleTap Development Mode secret_key_base Vulnerability

This module exploits a vulnerability in Ruby on Rails. In development mode, a Rails application would use its name as the secretkeybase, and can be easily extracted by visiting an invalid resource for a path. As a result, this allows a remote user to create and deliver a signed serialized payload...

TomTom: Reflected Cross Site Scripting vuln in tomtom.com

Hello Tomtom security team I found a reflected cross site scripting security vulnerability in tomtom.com https://www.tomtom.com/nlnl/search/?q=27%22--%3E%3CDetails%20Open%20OnToggle=confirmdocument.domain%3E This payload when loaded displays the domain the XSS vulnerability occurs in www.tomtom.c...

Lyst: [https://█████████/]&&[https://█████████/] Open Redirection

Summary Hi Team, An attacker can redirect vicitm on an external website using https://████/account/login endpoint because next parameter is not being validated properly. Affected URL https://███/account/login/?next=///////////////////////////evil.com Steps to Reproduce 1 Go...

HackerOne: Unreleased CTF Levels are Revealed on /group/user/ID1?user=USERID endpoint

Summary: At this moment, the two new upcoming CTF levels for https://ctf.hacker101.com/ctf have not been revealed. However, an IDOR at the https://ctf.hacker101.com/group/user/ID1?user=USERID endpoint reveals them see attached screenshot Description: Steps To Reproduce 1. Create a group. 2. At th...

Unauthorized File Access

Overview Versions of glance prior to 3.0.7 are vulnerable to Unauthorized File Access. The package provides a --nodot option meant to hide files and directories with names that begin with a ., such as .git but fails to hide files inside a folder that begins with .. Recommendation Upgrade to versi...

Grammarly: Account takeover through the combination of cookie manipulation and XSS

Summary: A cookie based XSS on www.grammarly.com exists due to reflection of a cookie called gnarcontainerId in DOM without any sanitization. Normally, gnarcontainerId is being set by the server however a vulnerable endpoint at gnar.grammarly.com called "/cookies" allows us to manipulate cookies...

Cross-Site Scripting

Overview All versions of buttle are vulnerable to Cross-Site Scripting. Due to misconfiguration of its rendering engine, buttle does not sanitize the HTML output allowing attackers to run arbitrary JavaScript when processing malicious markdown files. Recommendation No fix is currently available...

Prototype Pollution

Overview All versions of upmerge are vulnerable to Prototype Pollution. The merge function fails to prevent user input to alter an Object's prototype, allowing attackers to modify override properties of all objects in the application. This may lead to Denial of Service or may be chained with othe...

Cross-Site Scripting

Overview All versions of harp are vulnerable to Cross-Site Scripting. Due to misconfiguration of its rendering engine, harp does not sanitize the HTML output allowing attackers to run arbitrary JavaScript when processing malicious files. Recommendation No fix is currently available. Consider usin...

Passit: URL is vulnerable to clickjacking https://app.passit.io/

URLs do not have X-FRAME-OPTIONS set to DENY or SAMEORIGIN, and they are vulnerable to clickjacking. Reproduce steps: 1. enter your credentials and click on stay logged into this device then login 2. Run under the browser's code and you will see that the listed links are vulnerable to clickjackin...

Arbitrary File Overwrite

Overview Versions of tar prior to 4.4.2 for 4.x and 2.2.2 for 2.x are vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a file that matches the hardlink will overwrite the system's file with the contents of the...

Path Traversal

Overview Versions of servey prior to 3.x are vulnerable to Path Traversal. Due to insufficient input sanitization, attackers can access server files by using relative paths. Recommendation Upgrade to the latest version References - HackerOne Report - GitHub Advisory...

Microsoft Bounty Program Updates: Faster bounty review, faster payments, and higher rewards

In 2018 The Microsoft Bounty Program awarded over $2,000,000 to encourage and reward external security research in key technologies to protect our customers. Building on that success, we are excited to announce a number of improvements in our bounty programs to better serve the security research...

Prototype Pollution

Overview Versions of jquery prior to 3.4.0 are vulnerable to Prototype Pollution. The extend method allows an attacker to modify the prototype for Object causing changes in properties that will exist on all objects. Recommendation Upgrade to version 3.4.0 or later. References - HackerOne Report -...

Ruby On Rails File Content Disclosure ('doubletap')

This module uses a path traversal vulnerability in Ruby on Rails versions = "Ruby On Rails File Content Disclosure 'doubletap'", 'Description' = %q This module uses a path traversal vulnerability in Ruby on Rails versions = 'Carter Brainerd ', Metasploit module 'John Hawthorn ' PoC/discovery ,...

HackerOne: Deprecated Hacker101 coursework repository mentions Heroku App that is susceptible to takeover

Hi , I'm sure this repo on GitHub https://github.com/Hacker0x01 belong to Hackerone,inc. I've found that your docs on it mention a Heroku app breaker101.herokuapp.com which is no longer work and I could takeover it via HeroKu. Suggested Fix : Remove this app name from your docs or I can remove it...

50m-ctf: 0xc0ffee's 50M-CTF Submission

Introduction This CTF was extremely fun and truly original. It covered different kinds of very interesting challenges where completing one challenge led to another one, like some sort of quest with various levels. Thank you Cody and HackerOne for giving 5 hackers the opportunity to go to Vegas,...

Mail.ru: touch.mail.ru / e.mail.ru memory content disclosure

An invalid handling of NUL byte in API request led to disclosure of HTTP server memory region. The root cause of this bug is tracked to nginx+openresty. An advisory is below: Insecure implementation of nginx rewrite / OpenResty ngx.req.seturi + memory content leak in nginx. OpenResty is LUA engin...

50m-ctf: Writeup Hackerone 50M CTF

Writeup Hackerone 50m CTF First stage of this ctf we need to solve an hidden file from an image which posted by HackerOne at twitter https://twitter.com/hacker0x01/status/1100543680383832065?lang=en. I tried to run bunch of steganography tools and i found something with zteg the exact command is...

HackerOne: Moving a report to a different program doesn't reassign the Custom Field Values

When a report is moved to a different program, all associated objects are either removed or copied to the new program. During an internal security review of the Custom Fields feature it was observed that this isn't the case for Custom Field Values. This means that even after a report has moved, t...