h1-ctf: [H1-2006 2020] CTF write-up

Summary: Hello HackerOne team! I finally managed to solve this long but really nice CTF! Here is the flag: ^FLAG^736c635d8842751b8aafa556154eb9f3$FLAG$. You can access my writeup at https://diego95root.github.io/posts/H1-2006-CTF/. It's password protected, the password is the flag. Thank you so...

h1-ctf: h1-ctf writeup , finally paid the payments by chaining multiple bugs

Summary: Ultimate aim is to pay the payments of hackerone using bounty pay with no use privileges at starting. Given scope is : .bountypay.h1ctf.com Enumerated subdomains are : 1. www.bountypay.h1ctf.com 2. app.bountypay.h1ctf.com 3. staff.bountypay.h1ctf.com 4. api.bountypay.h1ctf.com 5...

U.S. Dept Of Defense: Subdomain takeover of ███

Summary: The subdomain ██████ had an CNAME record pointing to an unclaimed ███████ webservice. This is a high severity security issue because an attacker can register the subdomain on ███ and therefore can own the subdomain █████████. Description: The dangling CNAME record of █████████ is pointin...

h1-ctf: [H1-2006 2020] [CTF Writeup] A story about Bounty Payments, Collaboration & Community

H1-2006 CTF Writeup This is a story about both solving a CTF and, most importantly, on how to make friends during the journey and learn a lot a valuable things for the future. On a Friday evening I saw this tweet from HackerOne: F853545 Honestly, last CTF was really hard so I didn't really though...

h1-ctf: [H1-2006 2020] The Story of Making Bounty Hunters Happy

Disclaimer: I will try to make this post a fun read, given that whoever triagges will be probably going through similar write-ups again and again. The beginning: Being away from HackerOne over a month had made me rusty. Although the call to arms for Mr. Mickos and the community could not be left...

HackerOne: Uploading large payload on domain instructions causes server-side DoS

This was a DoS vulnerability in a specific endpoint that didn't limit the size of the upload. As explained in the hacker summary, we limited the payload to mitigate the attack. Note : To everyone who sees this report, if a program accepts DoS vulnerabilities please try to try test carefully as it...

HackerOne: Near to Infinite loop when changing Group's name that has API token as Team Member

Summary: The https://hackerone.com contains an iteration or loop with an exit condition that is near to infinite loop. If the loop can be influenced by an attacker, this weakness could allow attackers to consume excessive resources such as CPU or memory and even a DoS attack. Description: Hello...

Open Sesame - A Tool Which Runs To Display Random Publicly Disclosed Hackerone Reports When Bored

A python tool which runs to display random publicly disclosed Hackerone reports when bored. Automatically opens the report in browser. Contains Over 8k Publicly disclosed Hackerone reports and addtl. wordlist of 700 bug bounty writeups. This is a productivity tool for security enthusiasts and bug...

HackerOne: GraphQL field on Team node can be used to determine if External Program runs invite-only program

On 19th May, A new parameter policymarkdownhtml been introduced inside the team Graphql query. Using Graphql query, We can able to determine External program running privately on Hackerone as policymarkdownhtml parameter was able to fetch private internal policy. Note: Using this parameter, it wa...

Kubernetes: Private RSA key and Server key exposed on the GitHub repository

Report Submission Form Summary: I was searching for sensitive data in Kubernetes repository where I found these private keys. These are private RSA key and private server key, which could be used for unauthorized access. Steps To Reproduce: VISIT THESE LINKS Repository : kubernetes / kubernetes...

HackerOne: Unauthorized access to metadata of undisclosed reports that were retested

Summary: reportretests object in User node discloses some information about undisclosed report Description: An attacker can get some infomation such as "assetname" , "assettype" , "severityrating" , "weaknessname" of undisclosed report Steps To Reproduce 1. Invoke the below graphql call POST...

HackerOne: Disclosure of the name of a program that has a private part with an external link

Summary: Hi team , @jobert , @bencode . Not so long ago, you made an output to the program panel of information about whether the program has the function- retest. Also, this is reflected in the report by the attribute activeretestsubscription. It seems that it is reflected in publish reports tha...

HackerOne: The hacker has access to the administrative part of the management reports in publish report

Summary: Hi team, @jobert, @bencode . At the moment, I'm not entirely sure that this has a strong effect. But I also assume that this should not be on behalf of the hacker, and also in the future it may create problems, for example when you add new statuses for the report and they will have some...

Node.js third-party modules: Prototype Pollution lodash 4.17.15

I would like to report Prototype Pollution in lodash version 4.17.15 It allows Denial of Service and more. Module module name: lodash version: 4.17.15 npm page: https://www.npmjs.com/package/lodash Module Description The Lodash library exported as Node.js modules. Module Stats 27M in the last wee...

Exploit for Path Traversal in Gitlab

Python Exploit for gitlab private instance arbitrary file read...

U.S. Dept Of Defense: No Rate Limiting on https://██████/██████████/accounts/password/reset/ endpoint leads to Denial of Service

Summary: No-Rate Limit on Password reset endpoint results mail-spam functionality to be abused. Additionally, the password-reset link remain the same after each request. Description: Malicious user could Spear-target █████████ user mail and Spam it for as many requests as he would like. Possible...

Critical GitLab Flaw Earns Bounty Hunter $20K

A critical GitLab vulnerability, which could be leveraged by a remote attacker to execute code, recently netted a researcher a $20,000 bug-bounty award. The flaw was reported to GitLab by software developer William Bowling via the HackerOne bug bounty platform on March 23. It was then disclosed...

Elastic: Remote Code Execution in coming Kibana 7.7.0

Summary: Kibana 7.7.0 as per commit c5f682cb is vulnerable to a remote code execution vulnerability that is similar to the one reported in https://hackerone.com/reports/852613 Kibana 7.7.0 is not released, so this is an experiment. I know that getting these reports is more valuable to Elastic pri...

HackerOne: Potential stored Cross-Site Scripting vulnerability in Support Backend

HackerOne maintains an internal Support Backend system for employees. On the internal user profiles for hackers, a small overview is shown that lists the skills the user tagged their penetration tester profile with. Although the skills are currently managed by HackerOne and a user can only pick...

Tencent Ups Top Bug-Bounty Award to $15K

The Tencent Security Response Center TSRC is launching an expanded bug-bounty program, via the HackerOne white-hat platform – and the company has increased its top reward to $15,000. Tencent, a China-based global internet service provider, is opening up its existing bug-bounty program to...