HackerOne: User's who are banned from program can still be invited to the new reports as collaborators

Summary: Hello team! We have found out that the banned user's who are banned from program can be invited to the new reports as collaborator users. This is pretty weird because the hacker should be banned and no new reports shouldn't be allowed. If program bans the hacker the program can't invite...

HackerOne: Hackers can reveal the names of private programs that have an external link and Enterprise Product Edition

Summary: Hi team, A few days ago, your engineers revealed a field in the report- Custom fields. The team removed it after a while, but did not remove the design line Custom fields Available only for Enterprise Product Edition , Therefore, the sandbox program cannot independently accept this versi...

HackerOne: Hackers can find out the ID of private programs

Summary: Hi team, Our team noticed that it is possible to find out the IDs of sandbox programs. This allows us to create a list, thereby determining that the rest of the list of IDs will belong to private programs or public or external programdirectory listing. But by removing ID all public and...

HackerOne: Lack warning label when receiving a letter

Summary: Hi team, When using the function ShareReportViaEmail the email is sent to the email address specified by the hacker.This email looks legitimate and comes from verification email addresses, leaving no doubt about it being replaced. This endpoint also applies to sandbox reports which makes...

HackerOne: Used email confirmation link reveals the email address which is tied to it

Summary: If an attacker finds an used email confirmation link the token is in URL s/he will be able to see the email address which is tied to the confirmation link ID. The attack itself is pretty unlikely but the application should show the generic error message like The confirmation ID is invali...

HackerOne: Hackers can reveal the names of private programs that have an external link

Summary: Hi team, Our team has found a way to distinguish between private programs with external links. Due to the ability to select Severity Rating Options, the program can set two options : Rating or CVSS Score and CVSS Score Only. One of them removes the possibility of setting the...

ExpressionEngine 6.0.2 PHP Code Injection

---------------------------------------------------------------------------- ExpressionEngine security-sanitizefilename$file; 366. 367. $destdir = $this-languagesdir . $language . '/'; 368. $filename = $file . 'lang.php'; 369. $destloc = $destdir . $filename; 370. 371. $str = 'lang-loadfile$file;...

HackerOne: HackerOne Jira integration plugin Leaked JWT to unauthorized jira users

Summary: HackerOne provides an application tool HackerOne for Jira, an application that allows programs to track security issues through a jira instance. After testing the integration feature in the application, it was found that the application leads to the leakage of the JWT to unauthorized...

Concrete CMS: Authenticated path traversal to RCE

crayons Description The bFilename parameter in the scenario index.php/ccm/system/dialogs/block/design/submit is vulnerable to remote code execution via path traversal vulnerability. Authenticated attacker with rights to edit web application pages can upload malicious PNG file containing PHP code...

Top 5 Bug Bounty Platforms to Watch in 2021

While Gartner does not have a dedicated Magic Quadrant for Bug Bounties or Crowd Security Testing yet, Gartner Peer Insights already lists 24 vendors in the "Application Crowdtesting Services" category. We have compiled the top 5 most promising bug bounty platforms for those of you who are lookin...

Top 5 Bug Bounty Platforms to Watch in 2021

While Gartner does not have a dedicated Magic Quadrant for Bug Bounties or Crowd Security Testing yet, Gartner Peer Insights already lists 24 vendors in the "Application Crowdtesting Services" category. We have compiled the top 5 most promising bug bounty platforms for those of you who are lookin...

ImpressCMS: CSRF to XSS in /htdocs/modules/system/admin.php

The "admin.php" file in the "system" module of ImpressCMS version 1.4.2 was vulnerable to a Cross-Site Scripting XSS attack. This vulnerability allowed an attacker to execute malicious scripts in the context of an authorized user by exploiting a lack of input sanitization. The vulnerability was...

HackerOne: Ability to invite a new member on Sandbox Program

In the description HackerOne offers a sandbox for hackers to help them test program functionality for security vulnerabilities. To create a program, go here. You can select any product edition, giving you access to almost all features HackerOne offers. Hackers can create up to 30 programs in the...

h1-ctf: First CTF ever!

Pretext Started looking into hacking this autumn and then found out HackerOne was doing a Christmas themed CTF. Further investigation showed that the deplorable Grinch might be up to no good again - Christmas is in danger! TLDR Lots of hacking took place, the Grinch was stopped, Christmas saved a...

h1-ctf: h1-ctf : 12 days of hack holiday writeup

Summary This was a real fun CTF and I really enjoyed solving the challenges. Great job on creating the challenges. This is my writeup for the "12 Days of Hacky Holidays CTF". I hope you enjoy reading it, and I hope others reading it will pick up a trick or two. Flags: This is all the flags found...

h1-ctf: Infiltrating into Grinch-Networks and saving Christmas!

Hi, you can find the write-up for this CTF here : https://castilho101.github.io/posts/hackerone-ctf-christmas...

h1-ctf: Grinchs website takendown with various other exploits

The HackyHolidays This is my first HackerOne CTF challenge writeup. Contents: flag1: Day 1 Check the files, robots.txt flag2: Day 2 one more : jquery.min.js flag3: Day 3 People Rater flag4: Day 4 Brute Force, Swag Shop flag5: Day 5 Brute Force, Secure Login flag6: Day 6 Brute Force, My Diary flag...

Nokogiri::XML::Schema trusts input by default, exposing risk of XXE vulnerability

Severity Nokogiri maintainers have evaluated this as Low Severity CVSS3 2.6. Description In Nokogiri versions = 1.11.0.rc3, XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. Th...

GHSA-VR8Q-G5C7-M54M Nokogiri::XML::Schema trusts input by default, exposing risk of XXE vulnerability

Severity Nokogiri maintainers have evaluated this as Low Severity CVSS3 2.6. Description In Nokogiri versions = 1.11.0.rc3, XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. Th...

h1-ctf: HackyHolidays 2020 Full Write-up: Information Disclosure of 12 Flags

Intro This is my report for the 2020 Hacky Holidays HackerOne CTF. I managed to find all 12 flags with the assistance of my little helper, Jake. He specialises in brute-forcing via a unique keyboard mashing technique: F1134543 Anywho, let's get started... Flag 1: Robots The first one was a nice...