Cloudflare Public Bug Bounty: Sign in with Apple generates long-life JWTs, seemingly irrevocable, that grant immediate access to accounts

The OIDC JWT token issued on a new Sign in with Apple ID to the Cloudflare Dashboard had an excessive lifetime. When intercepted by a malicious actor, it enabled impersonation of the affected user on multiple devices during the entire token validity period without the need to re-authenticate. The...

Cloudflare Public Bug Bounty: Sign in with Apple works on existing accounts, bypasses 2FA

It was possible to bypass configured Cloudflare 2FA when logging in to a Cloudflare account using Apple ID authentication flow. A malicious actor could access a Cloudflare account by setting up an Apple ID account using e-mail address matching the one used to set up the targeted account. The issu...

Kubernetes: SSRF vulnerability can be exploited when a hijacked aggregated api server such as metrics-server returns 30X

Report Submission Form Summary: This report uses metrics-server as example, but it should be applicable to any aggregated api server. When metrics-server is hijacked, either by modifying the container image directly or by running another pods using the same label selector in kube-system namespace...

U.S. Dept Of Defense: Arbitrary File Deletion (CVE-2020-3187) on ████████

Hello team, I hope you're doing well, healthy & wealthy. I found an Arbitrary File Deletion CVE-2020-3187 vulnerability on https://██████████/+CSCOE+/sessionpassword.html that allows the Arbitrary File Deletion. References - https://twitter.com/aboul3la/status/1286809567989575685 -...

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...

GitLab: IDOR in "external status check" API leaks data about any status check on the instance

Summary The API endpoint for returning approval from an external status check contains an IDOR that lets a user list information about all external status checks on the GitLab instance. The feature is an Ultimate feature, but can be accessed by starting an Ultimate trial on GitLab.com. So the...

Semrush: php info file and sql backup at vendor's subdomain

Researcher found open /phpinfo.php and sql backup from mvp app at vendor's subdomain. There was no sensitive data...

Nextcloud: objectId in share location can be set to open arbitrary URL or Deeplinks

Summary: The NextCloud Talk app allows a user to share their location in the Mobile App. The objectId= in /ocs/v2.php/apps/spreed/api/v1/chat/$token/share Can be set to a URL or Deeplink, While the metaData= will render the map, Once a user clicked the map it will open the defined URL or Deeplink...

Shopify: A non-privileged user may create an admin account in Stocky

Summary: A non-privileged Stocky user created within Stocky may be able to create a new admin user. Steps to reproduce: 1.Create a non-privileged user in Stocky, don't give admin privileges to that user. 2.Login with the non-privileged user and go to https://stocky.shopifyapps.com/users/me, updat...

Nextcloud: Ratelimits do not apply to OCS DataResponse

Using $response-throttle on a DataResponse doesn't work as it is being transformed by BaseResponse into a OCS response. This response does not propagate any throttled setting. Impact Ratelimits on OCS DataResponse not functional...

GitLab: Privilege escalation of "external user" (with maintainer privilege) to internal access through project token

Summary An "external user" a user account with the status external which is granted "Maintainer" role on any project on the GitLab instance where "project tokens" are allowed can elevate its privilege to "Internal". An external user with maintainer permissions could create a project token, which...

U.S. General Services Administration: Weak password policy leading to exposure of administrator account access

Hi, The login endpoint https://mysmartplans.gsa.gov/Marathon/Default.aspx is having weak password policy. During the recon, I came across a mysmartplans overview document http://www.accentimaging.com/accent/pdfs/Accent%20MySmartPlans.pdf . In this document few users are mentioned like - rick, ban...

Homebrew: Brew bootstrap process is insecure

The process described in this page is not secure - no checksum / PGP signature is published and there is no way to check the download is legit: https://brew.sh/ "/bin/bash -c "$curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh"" This can lead to supply chain attacks su...

UPchieve: old session dose not expire after password change

hello all :: I discovered that the application Failure to invalidate session after password changed . In this scenario changing the password doesn't destroys the other sessions which are logged in with old passwords. url:: ==https://app.upchieve.org/== STEPS TO REPRODUCE: 1- create account in...

Shopify: No Session Expiry after log-out, attacker can reuse the old cookies

The session fixation vulnerability allowed an attacker to reuse old session cookies to log in to a victim's account on the Exchange Marketplace, even after the victim had logged out. The service has been decommissioned, and the issue has been resolved...

Mail.ru: [Plazius] SSRF через некорректно сконфигурированный Fiddler 46.148.201.206:10121

SSRF on ucs.ru...

GitLab: Stored-XSS on wiki pages

Hello, A Stored-XSS is existing on Wiki pages. It is caused by recent change in show.html.hamlL10 ruby ... "".htmlsafe ... authorurl is defined by committed email in wikipageversion.rb: ruby delegate :message, :sha, :id, :authorname, :authoremail, :authoreddate, to: :commit def authorurl user =...

TikTok: Lack of rate limitation on careers site allows the attacker to brute force the verification code

An attacker could have potentially attempted to brute force the verification code needed to reset a candidate's password by leveraging a lack of rate limiting on the TikTok careers portal. We thank @iambouali for reporting this to our team and confirming the resolution...

MTN Group: No rate limit lead to otp brute forcing

Summary: Hello. There is no rate limit protection in the endpoint https://mtnonline.com/nim/submit , Which could lead to brute force otp code. How To Reproduce: Visit https://mtnonline.com/nim and complete all the required field and submit. when next page load, user will be ask otp code. Enter an...

TikTok: CORS misconfiguration in TikTok ads portal

A CORS misconfiguration was discovered in the TikTok ads portal which could potentially allow an attacker to obtain user IDs and usernames of logged in users. This issue has been resolved. We thank @chihuahua for reporting this to our team...

Node.js third-party modules: [zenn-cli] Path traversal on Windows allows the attacker to read arbitrary .md files

Summary I would like to report path traversal in zenn-cli. It allows the attacker to read arbitrary .md files. Module module name: zenn-cli version: 0.1.39 npm page: https://www.npmjs.com/package/zenn-cli Module Description Manage Zenn content locally 👩‍💻 Module Stats 885 weekly downloads...

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...

Node.js: Node.js: use-after-free in TLSWrap

Node.js: use-after-free in TLSWrap Node v14.11.0 Current is vulnerable to a use-after-free bug in its TLS implementation. When writing to a TLS enabled socket, node::StreamBase::Write calls node::TLSWrap::DoWrite with a freshly allocated WriteWrap object as first argument. If the DoWrite method...

Nextcloud: Formula Injection vulnerability in CSV export feature

Dear Nextcloud Team – I have identified a formula injection vulnerability 12 in the CSV export feature of the Forms App. I am aware that the Forms app is not part of this bug bounty program but was advised to disclose it via hackerone anyway. Description. When a n Excel-/Calc- formula is sent as...

Mail.ru: XSS in [community.my.games]

Crossite scripting in community.my.games via post comments All we say is Thank You for an Account Takeover Flaw!...

Staging.every.org: Private account causes displayed through API

Summary: Any authenticated user can see which causes a private account user is interested in, by sending a GET request to the API, even though this information is not displayed anywhere on the profile page. In the profile settings, the following message is displayed for "Private Supporter" option...

Rockstar Games: DOM XSS on https://www.rockstargames.com/GTAOnline/feedback

In this report, the researcher identified a DOM-based Cross-Site Scripting vulnerability in the /GTAOnline/feedback endpoint. As we worked together on resolving this matter, the researcher helped us identify other parts of the GTA Online sub-site that suffered from the same vulnerability due to...

Ruby on Rails: ActiveStorage direct upload fails to sign content-length header for S3 service

When a user makes a direct upload using ActiveStorage, the browser makes a request to the DirectUploadsController containing the directupload parameters filename, contenttype, bytesize, and checksum. These are used to generate a presigned url that is then passed back to the browser, allowing the...

Dropbox: Local Privilege Escalation on Dropbox Desktop for Windows

This report describes a local privilege escalation in the Dropbox automatic updater process on Windows. It would allow a malicious actor who had already gained non-admin access to a Windows computer to obtain admin privileges, if Dropbox had previously been installed with admin privileges. This...

GitLab: Stored XSS in merge request pages

A stored cross-site scripting XSS vulnerability was discovered in GitLab merge request pages. An attacker could exploit this vulnerability by creating a merge request with a specially crafted branch name and tricking a user with insufficient permissions to view the merge request page. This could...

Starbucks: WAF bypass via double encoded non standard ASCII chars permitted a reflected XSS on response page not found pages - (629745 bypass)

Summary: Report 629745 not properly resolved: "Many Starbucks websites are vulnerable to cross-site scripting on 404 pages because double quotes lack sanitizing in hidden input tags, which leads to JavaScript execution". Description: Report 629745 caught my attention, so I began testing the WAF t...

8x8: Publicly accessible .svn repository - aastraconf.packet8.net

The server contained artifacts from an old SVN repository. The files were removed...

Mail.ru: Account Takeover at vseapteki.ru

Insufficient protection against SMS code bruteforcing allowed account takeover in vseapteki.ru Common flaws of SMS auth: https://blog.deteact.com/common-flaws-of-sms-auth/...

Node.js third-party modules: [treekill] RCE via insecure command concatenation (only Windows)

I would like to report a RCE issue in the treekill module. It allows to execute arbitrary commands remotely inside the victim's PC Module module name: treekill version: 1.0.0 npm page: https://www.npmjs.com/package/treekill Module Description treekill process and it's all children and child...

curl: Active Mixed Content over HTTPS

Summary: Resources Loaded from Insecure Origin HTTP Steps To Reproduce: Vulnerability Details detected that an active content loaded over HTTP within an HTTPS page Remedy There are two technologies to defense against the mixed content issues: HTTP Strict Transport Security HSTS is a mechanism tha...

Trint Ltd: IDOR in changing shared file name

Summary: Hi Trind LTD, I have found a IDOR vulnerability in https://app.trint.com . An user can change shared file names through this IDOR. Steps To Reproduce: 1. Create a file from account B 2. Capture the request of renaming the file as shown in sample request 3. Create a file from account A an...

Automattic: Wordpress VIP leaks email of the test a/c

i was testing learn.fb.com and i came to known that its wp-json is open and when i saw all the routes of the websites than i got to known that one end-point is leaking their internal email address the endpoint is as follow https://learn.fb.com/wp-json/th/v1/usergeneration The issue has been fixed...

Shopify: Unpublished Product Images can be disclosed

Hi, This looks like a minor issue but felt like it was something worth reporting. Ideally, a product can be published or remain unpublished on any sales channel. If a product remains unpublished, then no information regarding it must be visible to public including product pictures. But I found an...

Node.js third-party modules: environment variable leakage in error reporting

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 triage and respond quickly, so be sure to take your time filling out the report! I would like to report the leak of...

X (Formerly Twitter): Twitter ID exposure via error-based side-channel attack

Twitter ID Confirmator === Summary Recently I discovered a privacy-related vulnerability in Twitter. An attacker exploiting this vulnerability can identify a user when they visit a malicious website. Description Threat model: The attacker knows the victim’s Twitter ID/username and aims at...

WePay: Active mixed content issues on the site https://stage-go.wepay.com.

Hello. Summary: Page https://stage-go.wepay.com/static/ contains active mixed content: Description: Passive mixed content is content sent over HTTP that is contained on the HTTPS page, but which can not change other parts of the page. For example, an attacker can replace a picture sent via HTTP...

Urban Dictionary: Users able to set video url for unpublished words and able to see the name of unpublished words

Summary Users will be able to set youtube video URL to unpublished words and will be able to see names of an unpublished word. Description Once a user publishes a word and later unpublish it, others user still would be able to set the youtube video URL for it and will be able to see the name of t...

GitLab: Last build status and coverage leaked to unauthorized users

GitLab CI supports creating badges for the latest build/coverage on a certain branches. However, with restricted access, where users do not have access to pipelines, users still have access to the build/coverage status of any branch. This access works for different configurations: 1. For public...

Mail.ru: sql

SQL interface for web analytics was available at terrhq.ru subdomain...

Brave Software: RCE: DnDing shortcut files to chrome://brave allows loading HTML files in Muon's context

Summary: \395737 has shown that Brave supports chrome://brave/ URLs. The Brave team introduced a patch which blocks navigation to chrome://brave and removed chrome.remote.require to prevent command execution on the machine. Navigation to chrome://brave via shortcut files From my understanding: 1...

Ruby on Rails: Validation bypass for queries generated for PostgreSQL

When using DB for PostgreSQL, I discovered that if a parameter of a query contains null character, there is a pattern in which subsequent strings are lost. how to reproduce Prepare the environment $ rails new postgresqlrails -TB --database=postgresql $ cd postgresqlrails $ bundle exec ruby -v rub...

HackerOne: TeamProfile exposes partially sensitive information through GraphQL

I noticed there is new field teamprofile added and using the graphql below the latest serious report and reports received in three months were exposed "query":"query Dashboardreportseveritybreakdowntable$first0:Int! \n query \n id,\n ...F0\n \n\nfragment F0 on Query \n...

Ruby: OpenSSL::X509::Name Equality Check Does Not Work, Patch included

When two OpenSSL::X509::Name objects are compared using ==, depending on the ordering, non-equal objects will return true. When the first argument is one character longer than the second, or the second argument contains a character that is one less than a character in the same position of the fir...

WordPress: Open API For Username enumeration

We Can do username enumeration, Reproduce: 1. Go any wordpress site. 2.www.site.com/?author=1 type ?author=1 at end of site 3. You will get www.site.com/author/admin now, admin is username of login panel of that site Thanks, Sameer Phad Impact -...

Nextcloud: HTML injection with AutoComplete suggestions

As user1 set your displayname to Name 2. As user2 autocomplete the name in the comments input or Talk chat input 3. Click on the user name you just autocompleted User2 is redirected to https://nextcloud.com Only works with HTML, not with script Impact User1 can trick user2 to render any html...