HackerOne: IDOR in Report CSV export discloses the IDs of Custom Field Attributes of Programs

Specifying a report ID of another team when requesting a CSV export leaks the ID of the Custom Field Attribute in the CSV header. Request POST /reports/export HTTP/1.1 Host: localhost:8080 ... ----------868143055 Content-Disposition: form-data; name="reportids" 17 ----------868143055...

HackerOne: Invited team member can disclosure slack channels

Summary: Hello, this report is similar to 505493 also still waiting for response, but accent is totally on another thing. I think it is important and should be fixed, and so i create new report. Invited team member without any permission can disclosure private channel names of slack integration. ...

50m-ctf: CTF Writeup - c8889970d9fb722066f31e804e351993

CTF Code: c8889970d9fb722066f31e804e351993 HackerOne $50M CTF Write-Up ============ I came across this tweet announcing the HackerOne CTF for invitations to the HackerOne event in Vegas during DEFCON. I tried searching for a URL for the CTF, but couldn't find anything online, so I assumed that th...

50m-ctf: CTF Writeup

Hackerone 50m-CTF Writeup By VoidMercy Proof of Completion: c8889970d9fb722066f31e804e351993 Step 1: Twitter Post Image Steganography The 50M Hackerone challenge began with a tweet from @Hacker0x01. At first, I did not expect this tweet to be the start of the challenge, but little did I know, thi...

Argentinian Teen Becomes First to Earn $1M in Bug Bounties with HackerOne

A 19-year-old that goes by the handle “@trytohack” became the first white hat hacker to surpass $1 million in bounty awards on the HackerOne platform. The Argentinian researcher, whose real name is Santiago Lopez, started reporting security weaknesses to companies in 2015 on HackerOne, when he wa...

19-year-old ethical hacker is a millionaire now; thanks to his skills

By Carolina Argentina’s Santiago Lopez is now a millionaire due to his prowess on identifying flaws in online services as well as software. The ethical hacker who uses the moniker @trytohack became part of HackerOne’s bug bounty program in 2015 and so far he has reported more than 1,670 unique...

Slack: Real Time Error Logs Through Debug Information

Summary: During the assessment, I have found the debug URL on slackb.com which is disclosing the World Wide real time error logs of Slack users. The information leaked includes the following: 1. User Device Information 2. Redacted Token 3. Client IP Address 4. Description 5. Session ID 6. Team ID...

Video: HackerOne CEO on the Evolving Bug Bounty Landscape

The bug bounty landscape continues to change along with the concept and rules around vulnerability disclosure. Meanwhile, companies such as GitHub, Microsoft and others continue to keep pace, launching or expanding bounty programs. Even the European Commission is getting in on the action. On...

HackerOne: DOM Based XSS in www.hackerone.com via PostMessage (bypass of #398054)

Summary The security fix by Marketo to resolve the issue reported by @adac95 in 398054 can be bypassed by purchasing an .ma domain for €60. Description The issues described by @adac95 in 398054 remain insufficiently resolved because of an inadequate security check by Marketo in the following piec...

Prototype Pollution

Overview Versions of lodash before 4.17.5 are vulnerable to prototype pollution. The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of Object via constructor: prototype: ... causing the addition or modification of an existing...

HackerOne: report id is exposed for undisclosed reports in Hacktivity

Summary: This is similar to https://hackerone.com/reports/127620 where the report Id of undisclosed report is visible on graphql query Description: The new hacktivity graphql query includes undisclosed reports, but part of the query result is the report id which is included in private information...

Prototype Pollution

Overview Versions of node.extend before 1.1.7 or 2.0.1 are vulnerable to prototype pollution. Recommendation Update to version 1.1.7, 2.0.1 or later. References - HackerOne Report - GitHub Advisory...

HackerOne: Confidential data of users and limited metadata of programs and reports accessible via GraphQL

Summary: The GraphQL endpoint doesn't have access controls implemented properly. Description: Any attacker can get personally identifiable information of users of Hackerone such as email address, backup hash codes, facebookuserid, accountrecoveryphonenumberverifiedat, totpenabled, etc. These are...

HackerOne: Race condition in claiming program credentials

Hi, Summary: I was invited to a private program and I tried to get test credentials so a request as follows was sent to your server: POST /graphql HTTP/1.1 Host: hackerone.com Connection: close Content-Length: 778 Accept: / X-Auth-Token: ████ User-Agent: Mozilla/5.0 Windows NT 10.0; Win64; x64...

HackerOne: Disclosure of h1 challenges name through the calendar

Summary: It seems like the Calendar somehow grabs the name of the target for a h1 challenge even though the target name is not public. Description: h1challenges do not disclose the name of the target until the time it starts. For example for this challenge: █████ the name of the target is not...

RATELIMITED: Missing Protection Mechanism in Mail Servers allows malicious user to use staff.ratelimited.me email could lead to identity theft.

Hello ratelimited, I'm not really sure how your mail servers being configured but i guess there is a mis-configuration or missing protection mechanism that fails to verify if the email that is going to be sent are only made by authorized ratelimited staff only. From this point of view a malicious...

Path Traversal

Overview Versions of http-live-simulator prior to 1.0.7 are vulnerable to Path Traversal. Due to insufficient input sanitization, attackers can access server files by using relative paths. For example: curl --path-as-is http://localhost:8080//../../../../etc/passwd. Recommendation Upgrade to...

Chrome: CVE-2019-5765: 1-click HackerOne account takeover on all Android devices

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HackerOne: Response program can display "eligible for bounty" in scope area in program policy

Hello Hackerone Team and @jobert First of all, Happy new year to everyone. Summary Response program can also display "eligible for bounty" assets on program policy. It's basically causing from backend in terms of GRAPHQL mutation query for eligible in bounty:true which stays forever on response...

Ox App Suite 7.8.4 / 7.8.3 XSS / CSRF / Information Disclosure

Dear subscribers, we're sharing our latest advisory with you and like to thank everyone who contributed in finding and solving those vulnerabilities. Feel free to join our bug bounty programs open-xchange, dovecot, powerdns at HackerOne. Yours sincerely, Martin Heiland, Open-Xchange GmbH Product:...