curl: Denial of Service vulnerability in curl when parsing MQTT server response

Summary: Curl remains in infinite loop with suitable MQTT server response. Steps To Reproduce: Step 1: Run the following on linux with the attached file "poc" : $ socat -u FILE:poc TCP-LISTEN:12345,reuseaddr,fork Step 2: Use curl: $ curl mqtt://localhost:12345 Step 3: Observe output of "top"...

Evernote: Reflected XSS in the shared note view on https://evernote.com

Summary: There is a reflected XSS vulnerability on https://evernote.com, in the shared web note view, triggered through the view and ionUrl parameters of the /shard/sSHARDNUMBER/client/snv endpoint. Description: When a user creates a note and shares it, it is stored in the following endpoint, bei...

Nextcloud: Control character filtering misses leading and trailing whitespace in file and folder names

Summary: It is possible to create files and folders that have leading and trailing \n, \r, \t, and \v characters. The server rejects files and folders that have these characters in the middle of their names, so this might be an opportunity for injection. In lib/private/Files/Storage/Common.php, t...

U.S. Dept Of Defense: Reflected XSS

Description: Hi i found a XSS at a new IP Address ssl points to ███hostname https://███████/WebPuff5.4/Login?signIn=Sign%20In&password=g00dPa%24%24w0rD&url=login.jsp%27%22%26%25%3Cacx%3E%3CScRiPt%20%3Ealert9868%3C/ScRiPt%3E&username=tMtFQiRt References https://owasp.org/www-community/attacks/xss/...

Nextcloud: When sharing a Deck card in conversation the metaData can be manipulated to open arbitrary URL

Summary: This report is similar to 1337178 In Nextcloud Deck a user can post their decks in to a conversation via nextcloud talk. The link in metaData can be manipulated to point to a another URL. Steps To Reproduce: 0. Setup burpsuite to proxy 1. Go to Nextcloud Deck and pick a board 2. Pick any...

Reddit: Domain Takeover of Reddit.ru via DNS Hijacking

Summary I discovered that Reddit.ru was vulnerable to DNS hijacking via DNS provider, Reg.ru. This would allow a malicious attacker to control the content on this domain, as well as, create email addresses associated with it... I'm going to be totally honest and say that any of us ethical hackers...

HackerOne: New link opening method makes hackerone vulnerable to tabnabbing

Summary: Hackerone recently changed how it opens the external links and this new way is vulnerable to tabnabbing. Description: Please see the POC. Steps To Reproduce 1. Click here: https://awasthi7.github.io/ 2. Click on proceed when warning appears. 3. The site will open in new tab and hackerone...

Moneybird: No rate Limit

Mailing to our support team using the support center in the application was improperly rate limited. There is now a better rate limiter in place...

HackerOne: Bypassing the External Link Warning

Summary: As the HackerOne team is aware, the URL https://hackerone.com/users/saml/[email protected] can redirect users to external pages. Because of this, there is a protection in the links created by Markdown to show the user a warning when clicking in any link started with...

h1-ctf: Writeup Hackyholiday CTF

Hi there, Find my writeup on attached : F1128138 Thanks adam for making the CTF, Really PAIN for my head! Impact Hackerone Hoodie ? 😍😍...

TikTok: [CSRF] TikTok Careers Portal Account Takeover

A missing CSRF protection and open redirect vulnerability was reported in the TikTok Careers portal single sign on flow which is used by applicants to apply for TikTok positions. This flaw was quickly remediated and does not impact TikTok.com or mobile application. We thank @lauritz for reporting...

CS Money: Content Spoofing/Text Injection in https://support.cs.money and JS file not minified and uglyfied which makes it clearly readable

Issue 1: Greetings, Hello Team, I have found a Content Spoofing/Text Injection on this domain https://support.cs.money Using the below link the attacker can trick any genuine user to go to the attacker's phishing site. The attacker could craft the URL by providing discounts which will tempt the...

RBKmoney: Apple Pay cryptogram replay and amount tampering

During Apple Pay in-app or on-site payments the device generates a payment cryptogram, which contains a transaction ID, encrypted payment data, etc. This is an example of the cryptogram which the phone passes to the internet acquiring service on api.transferwise.com: "token": "paymentData":...

Mail.ru: Stored XSS through fileupload

Stored XSS in view uploaded file functionality on static.donationalerts.ru...

Zomato: Improper Validation at Partners Login

Timeline | Timeline | Action | |---|---| | Thu, 24 Sep 2020, 12:10 IST | Researcher submitted the report on H1 with initial severity as High. | | Thu, 24 Sep 2020, 12:32 IST | First response - we asked for clarification via demonstration on attack scenarios. Parallelly, we began our own...

Basecamp: stored XSS in hey.com message content

Hi I found a stored xss using messagecontent parameter when forwarding an email or saving it as draft , and when the victim click on the email to view it, it gets executed . I used this payload as the message content : From: "f" To: [email protected] Message-ID: Subject:...

Shopify: Privilege Escalation in Point Of Sale Application from POS Manage Staff Role to potentially Store Owner

I was playing a bit with the Point Of Sale application and it came to my attention that it is possible to navigate from the Point Of Sale Application up to the Plan & Permission in the admin. I am not sure if this is intentional, but since it leads to potentially take over a shop, I'm reporting i...

Node.js third-party modules: [arpping] Remote Code Execution

I would like to report RCE in arpping It allows to execute arbitrary commands on the victim's PC Module module name: arpping version: 2.0.0 npm page: https://www.npmjs.com/package/arpping Module Description Discover and search for internet-connected devices locally using ping and arp Module Stats...

Visma Public: A sales only user can edit the purchase invoice drafts.

The researcher has found a missing authorization issue: a sales only user could edit the purchase invoice drafts that he shouldn't...

U.S. Dept Of Defense: Arbitrary file upload and stored XSS via ███ support request

Summary: A malicious user can upload files of any type when submitting a support request. Impact This would allow the attacker to upload malicious executable files as well as .html or .svg files which would allow the attacker to execute malicious code on behalf of the ████ customer support...

Node.js third-party modules: [Limited bypass of #793704] Blind SSRF in Ghost CMS

Blind SSRF vulnerability in Ghost allows for internal port scanning, or reading oembed contents from internal network...

Visma Public: Able to continue user creation process after deleting the HTML element that shows the message that the session is closed

Summary: Able to continue user creation process and successfully submit the user creation form after deleting the HTML element that shows the message that the session is closed after signing out in different tab from same browser. Steps To Reproduce: 1. Login to...

U.S. Dept Of Defense: Admin Login Credential Leak for DoD Gitlab EE instance

Summary A DoD employee/contractor exposed the ███ password in a GitHub repository █████████ leading to full ███ access in a DoD DISA-associated private Gitlab EE instance ███. Description The IP address ████ recently hosted the subdomain █████████ as of 2019-09-23. ██████ Now port 80 points to a...

Rocket.Chat: API Keys Hardcoded in Github repository

NOTE! Thanks for submitting a report! Please replace all the square sections below with the pertinent details. Remember, the more detail you provide, the easier it is for us to verify and then potentially issue a bounty, so be sure to take your time filling out the report! Summary: API Keys is ha...

Mail.ru: Mail.Ru Email for Android: Injecting custom screen inside adding new account flow

Intent was implicitely invoked on account refistration in Mail.ru Mail application for Android, allowing screen content spoofing via local application...

Railto LLC: Administrator access to staging.railto.com

Summary: Hey team, While doing some recon for railto sub-domains. i came across a most critical bug which lets me complete access of https://staging.railto.com. i can add anything and removing anythings as i got the ADMIN level privilege. Steps 1. Go to https://staging.railto.com/admin url. 2. Se...

Nextcloud: Talk - Leak of password-protected room name via already existent resource addition

CVSS ---- Medium 4.3 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Description ----------- Affected: Talk / Spreed 6.0.3 The name of shared but password-protected rooms leaks to low-privileged authenticated users. An attacker does not need to guess room IDs, but can simply iterate over IDs to gath...

GitLab: Git flag injection - local file overwrite to remote code execution

Summary The wikiblobs scope of the Search API can be provided with an arbitrary ref parameter, allowing for additional flags to be injected into the git command. For example the following API call: curl --header "PRIVATE-TOKEN: $TOKEN"...

Ruby: OS Command Injection via egrep in Rake::FileList

When a file which has command file name of stating with | is in Rake::FileList, then egrep will execute the command. How to reproduce PoC pocrake.rb is the following. ruby require 'rake' list = Rake::FileList.newDir.glob'' p list list.egrep/something/ Example of executing. % ls -1 Gemfile...

Radancy: Wrong link on corne.maximum.nl

Domain and URL: corne.maximum.nl Hello, I noticed that your subdomain corne.maximum.nl links to the website "maximum.com" instead of "maximum.nl" "maximum.com" is in control of a Chinese organization as you said in your description. I think you've made a little mistake, but there is no impact :...

ZEIT: CSRF On Connect Account With Github Lead To Account Takeover

Summary: Hi I found it as the endpoint of Connecting the account with the github account vulnerable to CSRF attack because of the lack of endpoint protection against CSRF attack The attacker Can exploit this vulnerability to force users to link their account with his or her github account, which ...

pixiv: Open redirect protection (https://www.pixiv.net/jump.php) is broken for novels

Summary: I found that pixiv has a open redirect protection, any external link in illustration is converted to https://www.pixiv.net/jump.php?. For example https://i3mx4usociis8twimpcu2ty0erkh86.burpcollaborator.net/abc in https://www.pixiv.net/memberillust.php?mode=medium&illustid=74148892 is...

OLX: web cache deception in https://tradus.com lead to name/user_id enumeration and other info

summary Hi OLX team, i found a web cache deception vulnerability in https://tradus.com. With this vulnerability an attacker can gain access to the name of the victim user, the userid and other informations. Attack scenario 1 an attacker send to the victim a link to the malicious page like the PoC...

OLX: XSS inside HTML Link Tag

Hello, i discovered XSS in sharjah.dubizzle.com. XSS is reflected inside HTML Link tag so it need some condition to trigger the payload. Step to Reproduce - Visit https://sharjah.dubizzle.com/property-for-sale/land" accesskey="X" onclick=alert1337...

Grammarly: DOM based CSS Injection on grammarly.com

Summary: An attacker can inject an external css file which can lead to phishing attacks and xss in older browsers. Description: Within the main.js file the following code exists: javascript t.prototype.componentWillMount = function var e = this.getCtx.nav.waypoint.query, t = e.extcss, n =...

X (Formerly Twitter): Stored XSS on reports.

Summary: Stored XSS can be submitted on reports, and anyone who will check the report the XSS will trigger. Description: Stored XSS, also known as persistent XSS, is the more damaging than non-persistent XSS. It occurs when a malicious script is injected directly into a vulnerable web application...

Internet Bug Bounty: ZeroMQ libzmq remote code execution

Bug report and exploit: https://github.com/zeromq/libzmq/issues/3351 Fix by me: https://github.com/zeromq/libzmq/pull/3353 My motive for full disclosure is as follows: Is it true that it is not safe to use ZeroMQ over the internet because it will crash? Earlier versions of the ZeroMQ library befo...

Nextcloud: Private/confidential setting of calendar events is ignored on activity stream

https://github.com/nextcloud/server/pull/13331 Events that are private should not generate events for other users Events that are confidential should not leak the name to other users Impact The details are leaked to other users...

Razer US: DLL Hijacking Vulnerability in synapse-2

The Synapse 2 installer was subject to a DLL planting attack in the Downloads folder. This was fixed in May of 2019...

Nextcloud: Github wikis are editable by anyone

Github wikis on the following projects https://github.com/nextcloud/fulltextsearch https://github.com/nextcloud/nextcloudpi https://github.com/nextcloud/spreed https://github.com/nextcloud/ocsms https://github.com/nextcloud/nextcloud-snap https://github.com/nextcloud/passman can be edited by any...

PayPal: Unsafe deserialization leads to token leakage in PayPal & PayPal for Business [Android]

A Bug Bounty researcher identified an issue where a JSON wrapper could be used to instantiate arbitrary Java objects. This could lead to circumstances where a class called in the PayPal Android app could be read by a malicious app on the same mobile device. A specific user’s session data could...

RubyGems: 65534 times efficient, Brute-force attack for api_key

I have found that type checking for apikey is insufficient in rubygems.org's source code. https://github.com/rubygems/rubygems.org/blob/master/app/controllers/applicationcontroller.rbL63 ruby def authenticatewithapikey apikey = request.headers"Authorization" || params:apikey @apiuser =...

Rockstar Games: Found CSRF Vulnerability in https://support.rockstargames.com/

In this report, the researcher found a CSRF vulnerability that potentially allowed an attacker to spam false support requests. This issue was resolved in a site update...

Infogram: possibility to create account without username

hi , infogram.com doesn't allow us to go next untill we give name of our account but i bypassed that. i am able to create an account without any name, just by modify response field. steps:- 1. create new account , when you reach page where you have to give your name. 2. give name and intercept th...

HackerOne: Disclosing a private program in an external link if program is paused

Summary: Hi team Description: If the program is paused that we will not be able to send reports to this program and if we try to directly contact the link https://hackerone.com/externalprogrammpaused/reports/new we will be returned to the main page https://hackerone.com/externalprogrammpaused Ste...

VK.com: Узнаем несколько цифр номера телефона юзера (можно флудить смс), всего раз узнав его remixsid и его ид юзера, и установка оффлайна юзерам.

Недостаточные проверки сессии. Было можно узнать часть номера телефона юзера и отправлять ему смс с ссылкой на приложение https://vk.com/mobile всего раз узнав его remixsid, вне зависимости сколько раз были ресетнуты сессии. Самый давний валидный для этой темы remixsid был давности май 2016 года...

Open-Xchange: store xss in calendar via upload filename

reproduce step 1.access url https://sandbox.open-xchange.com/appsuite/app=io.ox/calendar/scheduling 2.create appointment 3.upload file ,the file name with payload '"img src=x onerror=alertdocument.domain.svg' 4.access...

Nextcloud: Missing X-Content-Type-Options

Nextcloud doesn't have a header settings for X-Content-Type Options which means it is vulnerable to MIME sniffing. The only defined value, "nosniff", prevents Internet Explorer and Google Chrome from MIME-sniffing a response away from the declared content-type. This also applies to Google Chrome...

Mail.ru: слепая XSS в админ панели torg.mail.ru через отзыв

Blind XSS in admin panel for torg.mail.ru. torg.mail.ru is not in bug bounty program's scope, a bounty was awarded due to high potential impact. Недостаточная фильтрация приводит к XSS в административной панели в одном из поддоменов mail.ru через имя пользователя при оставлении отзыва...

Dropbox: Bypass Local Authentication (TouchID)

​​This report describes an attack to bypass TouchID in the Dropbox Mobile iOS application on jailbroken iOS devices. Dropbox doesn’t consider jailbroken devices in scope for our bounty program...