h1-ctf: [h1-2006 CTF] Multiple vulnerabilities leading to account takeover and two-factor authentication bypass allows to send pending bounty payments

Hi, First things first, the flag of the CTF challenge. F863095 Write-Up I've published my write-up at https://kapytein.nl/texts/2020-06-10-h1-2006-ctf-writeup-2cf34abd3ed/, in order to avoid a lengthy report 😅. TL;DR 1 2FA bypass as we control both values on the comparison. 2 SSRF to...

Zomato: Zomato Map server going out of memory while resizing map image

Go to https://maps.zomato.com/php/staticmap?center=0,0&size=240x150&maptype=zomato&markers=180,180,pinres32&sensor=false&scale=%&zoom=eval2147483647+1&language=en a map will be displayed Now increase the map size by 10x...

Infogram: LFI through the MySQL connection

Hello team! I've found a way to read Infogram's server local files through the MySQL connection. The problem is that you're using the LOAD DATA LOCAL feature with your MySQL client. This how an attacker can easily send server's local files to her/his database. I've successfully readed the...

Mail.ru: [web.icq.com] Stored XSS in link when sending message

Domain, site, application -- https://web.icq.com/ Testing environment -- Chrome Steps to reproduce -- 1 Enter a chat 2 Send the following message: https://www.google.com/"onmouseover="javascript:prompt" 3 Hover the link Actual results -- XSS prompt shows. Expected results, security impact...

Nextcloud: bypass of 2FA

Improper protection of the 2FA login made a bypass of the 2FA possible. The bug required to know user credentials but effectively rendered the 2FA ineffective. The issue has been fixed by the Nextcloud team and has been validated by the reporter...

Dropbox: SSRF vulnerablity in app webhooks

Server Side Request Forgery SSRF is a vulnerabilty which allows an attacker to make web requests from the context of the server host machine to arbitrary URL's. This vulnerability can allow the attacker to access resources internal to the network, which would otherwise be inaccessible. This...

HackerOne: Insecure Direct Object Reference (IDOR) - Delete Campaigns

An insecure direct object reference IDOR vulnerability was discovered on a website, which allowed an attacker to delete any campaign based on the campaign ID. By modifying the campaign ID parameter in the request, an attacker could delete campaigns on any program. This vulnerability could have...

Open-Xchange: Privilege escalation possible in dovecot when similar passdbs are used

Summary --------- Privilege escalation is possible as a result of incorrect security code logic for dovecot passdb definitions. Description ------------ When two passdb configuration entries exist in the dovecot configuration which have the same driver and args settings, the incorrect...

Aiven Ltd: Kafka Connect RCE via connector SASL JAAS JndiLoginModule configuration

Summary: When configuring the connector via the Aiven API or the Kafka Connect REST API, the attacker can set the database.history.producer.sasl.jaas.config connector property for the io.debezium.connector.mysql.MySqlConnector connector. This is likely true for other debezium connectors too. By...

HackerOne: Tab nabbing in Hackerone inbox.

Description: Tab nabbing vulnerability occurs When you open a link in a new tab target="blank" , the page that opens in a new tab can access the initial tab and change its location using the window.opener property and from this a lot of phishing attacks could happen. This scenario occurs on...

GitHub Security Lab: ihsinme: CPP add query for CWE-788 Access of memory location after the end of a buffer using strncat.

This bug was reported directly to GitHub Security Lab...

Shopify: [h1-2102] [Yaworski's Broskis] Low privilege user can read POS PINs via graphql and elevate his privilege

Summary: A low privilege user both in the shop and in the POS can read POS PINs via graphql and elevate his privilege with a physical access to the POS. Steps To Reproduce: 1. Log in to your shop and install the POS app https://apps.shopify.com/shopify-pos 2. Log in Shopify Plus as an org owner a...

Basecamp: Information Disclosure of Garbage Collection Cycle

Hello, Upon enumerating a subdomain content I found a directory that discloses the duration of the garbage collection cycles. I think that these information should be kept private because public should not know information about the target application and how it operates or do its garbage...

Zomato: The vulnerabilities found were XSS, Public disclosure, Network enumeration via CSRF, DLL hijacking.

Summary IP found using ping command- 52.77.124.190 Then I used nmap tool to find the indepth information. I used burp suite and DNS scanner but it was not fruitful. Then I explored some GitHub repositories to perform thorough web-application testing. Using Aquatone I found some hidden domains. Th...

Internet Bug Bounty: A reflected XSS in python/Lib/DocXMLRPCServer.py

I have report this issue to PSRT and it has been resolved now. Details about this issue is at https://bugs.python.org/issue38243 and https://vulners.com/cve/CVE-2019-16935 Impact It's the same with other xss...

Internet Bug Bounty: mod_remoteip stack buffer overflow and NULL pointer dereference

Versions Affected: httpd 2.4.32 to 2.4.39 Summary: When modremoteip was configured to use a trusted intermediary proxy server using the "PROXY" protocol, a specially crafted PROXY v1 or PROXY v2 header could trigger a stack buffer overflow or NULL pointer deference. This was assigned CVE-2019-100...

Starbucks: Information disclosure on sim.starbucks.com

Description: Hi,there.I found the sim.starbucks.com host deployed the jira server which version is 7.9.2,there is many public vulnerability on this low version. Information disclosured vulnerability 1.CVE-2019-3403https://jira.atlassian.com/browse/JRASERVER-69242 visit the URL address,you can che...

Pornhub: Stored XSS in photo comment functionality

The photo comment functionality is vulnerable to stored cross site scripting: an attacker can craft a comment that contains malicious code and get it stored. This can be reproduced on my test account at http://www.pornhub.com/photo/166952961. Interestingly, differently from 171901 where i could...

Yahoo!: readble .htaccess + Source Code Disclosure (+ .SVN repository)

Thank you for your submission to the Yahoo Bug Bounty program. We were able to reproduce the issue you reported and have implemented appropriate fixes. We appreciate your adherence to responsible disclosure guidelines and look forward to your future participation in the program...

HackerOne: Broken Authentication and session management OWASP A2

Description: Session management issue in https://www.hackerone.com Cookies are used to maintain session of the particular user and they should expire once the user logs out of his hackerone account.In secure web application,Cookies immediately expire once the user logs out of his account. But thi...

Monero: Critical Deadlock Vulnerability in Monero RPC Leading to Complete Node Paralysis

A deadlock vulnerability was discovered in the Monero JSON-RPC interface that allowed a remote, unauthenticated attacker to completely paralyze any Monero node with a single HTTP request containing specific batch methods, leading to permanent denial of service. The vulnerability affected all...

Internet Bug Bounty: Apache Airflow Google Cloud Sql Provider Remote Command Execution

An improper input validation vulnerability was discovered in Apache Airflow Google Provider before version 8.10.0, which could allow an attacker to execute remote commands on the victim's machine by modifying the existing connection configuration information. The vulnerability was discovered by X...

Automattic: SQL Injection intensedebate.com

hello dear support I have found SQL Injection on intensedebate.com parameters injectable ?acctid=1 URL:https://www.intensedebate.com/js/importStatus.php?acctid=1 I'm used sqlmap to injection command sqlmap --url https://www.intensedebate.com/js/importStatus.php?acctid=1 --dbs F1140562 available...

Solana BBP: Sensitive data leaks [username, password, keys]

Summary: Hello team, This bug shows some critical asset like secret username, password, keys, etc. publicly on githubq Steps To Reproduce: Please visit the url below 1. https://github.com/solana-labs/solana/blob/e310bad7ab09a4a5bd23314983bffa1707506230/.buildkite/env/secrets.ejson 2...

Shopify: Shopify Stocky App OAuth Misconfiguration

@vulnh0lic noticed that a staff member without Apps permission was able to access the Stocky app. We determined that this was because of a bug in Stocky's OAuth authentication code, which allowed the user to be granted access to Stocky at the start of the OAuth process rather than the end. This...

Mail.ru: Clickjacking Full account takeover and editing the personal information at [account.my.com]

Hi, while i was testing i found that my.com is vulnerable to clickjacking so i checked if the settings page is vulnerable or not and it was vulnerable so now this has a risk!, the attacker could make an exploit code at the changing password page to takeover the victim account, and the same with t...

Slack: Subdomain takeover on podcasts.slack-core.com

I noticed slack-core.com is used for Slack's call infrastructure. I had never seen that domain before, so I decided to find out what else was running on it. It turned out podcasts.slack-core.com was pointing to a Podcast and RSS hosting service called Feed.Press. However, there was no Feed.Press...

Algolia: API Key added for one Indices works for all other indices too.

Hi, I created one API key and restricted it to only one index by adding it and gave it right for creating record. Now this api can be used to add records in other indeces in same account. Screenshot is attached...

HackerOne: Scope information is leaked when visiting policy scopes tab of any External Program

Scope information was leaked when visiting the policy scopes tab of any external program on HackerOne, allowing unauthorized users to view private program details. The vulnerability was caused by the new scope policy feature that displayed all program names and scopes using the new functionality...

U.S. Dept Of Defense: ██████████ running a vulnerable log4j

Description: https://vulners.com/cve/CVE-2021-44228 Impact Probably arbitrary code execution System Hosts ████████ Affected Products and Versions CVE Numbers CVE-2021-44228 Steps to Reproduce 1. Browse to https://████████/███████https%3A%2F%2F█████████%2F 2. Enter a...

Acronis: Subdomain takeover of main domain of https://www.cyberlynx.lu/

Summary Hi Acronis Security Team , Hope you well. I found one of your subdomains which is www.cyberlynx.lu One of your Acquisition is pointing towards www.cyberlynx.lu canonical name = www118.wixdns.net. www118.wixdns.net canonical name = balancer.wixdns.net. balancer.wixdns.net canonical name =...

Internet Bug Bounty: Integer overflow in CipherUpdate

Summary: I reported an integer overflow to the OpenSSL security list on Dec 13, 2020 and it was fixed in OpenSSL 1.1.1j. Reporting it here for the bounty. It was assigned CVE-2021-23840 https://nvd.nist.gov/vuln/detail/CVE-2021-23840 which NVD rated CVSS 7.5. Amusingly, the same bug worked around...

GitHub Security Lab: [Java] CWE-555: Query to detect password in Java EE configuration files

This bug was reported directly to GitHub Security Lab...

curl: curl overwrites local file with -J option if file non-readable, but file writable.

Summary: When using -J -O options on curl command line tool and a server responding with a header that is using Content-Disposition to provide a filename, existing local file will be overwritten if the file is non-readable by the current user, but file is writable by the current user. Curl contai...

Shopify: Subdomain Takeover of multiple *.ttcdn.co domains

@priyanshuxo demonstrated being able to takeover multiple ttcdn.co subdomains. While we removed the DNS records, the ttcdn.co domain is out of scope for our program, making this report ineligible for a bounty. This is a limited disclosure at their request...

h1-ctf: [H1-2006 2020] How I solved my first H1 CTF

Introduction: Hello! My name is @cr33pbp0y and I going to tell you how I resolved my first HackerOne CTF. Prelude One day, I was reading some tweets about some new vulnerabilities and new hunters adquisitions when the Great H tweeted: F861267 I thought: "WoW, a new virtual event!! It could be...

Mail.ru: Brute-force any email account through allods.mail.ru

!!! Полная версия отчета со скриншотами находится во вложенном PDF-файле. Vulnerability Technical description ========================= По адресу https://allods.mail.ru/account.php находится форма регистрации нового пользователя в игре. В процессе заполнения формы, посылается Ajax POST-запрос в...

HackerOne: Email address of any user can be queried on Report Invitation GraphQL type when username is known

Summary: Email id of all hackerone users disclosure Description: There is an flaw , with that i can get all hackerone users email id Steps To Reproduce 1. Invoke the below graphql call POST /graphql HTTP/1.1 "query":"mutation Revokecredentialmutation$input0:AddReportParticipantInput!...

Mail.ru: [windows10.hi-tech.mail.ru] Blind SQL Injection

Доброе утро! Сегодня удалось найти у вас слепую скулю, правда она снова вне скопа походу URL: https://windows10.hi-tech.mail.ru/api/tweets?cityid=select0fromselectsleep25v Request: GET /api/tweets?cityid=select0fromselectsleep25v HTTP/1.1 Host: windows10.hi-tech.mail.ru User-Agent: Mozilla/5.0 X1...

Ian Dunn: xmlrpc.php FILE IS enable it can be used for conducting a Bruteforce attack and Denial of Service(DoS)

Hi Team, The website https://www.iandunn.name has the xmlrpc.php file enabled and could thus be potentially used for such an attack against other victim hosts. Wordpress that have xmlrpc.php enabled for pingbacks, trackbacks, etc. can be made as a part of a huge botnet causing a major DDOS. URL:...

Ian Dunn: Potential Open-Redirection

Steps To Reproduce: ===================== 1 visit : Normal Link. 2 Sign-in with your wordpress account and you will directed to This 3Change the value of the Parameter : redirectto .. To the attacker website let's say : https://vul-example.com 4NOTE THAT : you must URL-encode the vulnerable link...

Internet Bug Bounty: Dragonblood: Design and Implementation Flaws in WPA3 and EAP-pwd

Full background information is at our website and detailed information can be found in our research paper. Vulnerability Summary First Disclosure Summarized, the Dragonfly handshake of WPA3 and EAP-pwd is supposed to prevent dictionary attacks. However, we discovered design flaws that still enabl...

Liberapay: Insecure Account Deletion

Hi Team, The removal of account is one of the sensitive part of a web application that needs to protect, therefore removing an account should validate the authenticity of the user, however i have found that when removing an account, the system did not require the user to input the account passwor...

arxius: Local File Disclosure via ffmpeg

Summary ffmpeg is a video and audio software that is used for generating previews and for converting videos. Your current installation allows HLS playlists that contain references to external files, which leads to local file disclosure. Reproduction 1. Download this script...

U.S. Dept Of Defense: DOM-XSS

A DOM-XSS vulnerability was found on a subdomain of a website, which could allow an attacker with access to the Siteminder CA to perform a cross-site scripting attack and cause information leaks, privilege escalation, and/or denial of service. The vulnerability was assigned CVE-2013-5968 and a...

curl: CVE-2023-27535: FTP too eager connection reuse

A vulnerability existed in libcurl FTPS protocol that allowed the reuse of a connection even if different credentials were specified for different connections, resulting in the use of cached credentials for the wrong content. The vulnerability was caused by the failure to refuse caching when...

Nextcloud: nextcloudcmd incorrectly trusts bad TLS certificates

Ref: https://github.com/nextcloud/desktop/issues/4927 Bug description I have a self hosted Nextcloud instance using my own private CA for TLS certs. When running nextcloudcmd without the --trust, it disregards the cert validation failure as "This is not an actual error" and proceeds with the sync...

GitHub Security Lab: Java: Timing attacks while comparing results of cryptographic operations

This bug was reported directly to GitHub Security Lab...

Automattic: GET /api/v2/url_info endpoint is vulnerable to Blind SSRF

Summary: GET /api/v2/urlinfo endpoint is vulnerable to Blind SSRF. I am able to hit both Internal and External services via url parameter by replacing with internal and external url. Platforms Affected: https://www.tumblr.com/ Steps To Reproduce: 1. Login to https://www.tumblr.com/ 2. Follow any...

Bumble: Race Condition on "Get free Badoo Premium" which allows to get more days of free premium for Free.

Summary: On Badoo when a user wants to delete his account it prompts for a Free 3 days premium or the user can proceed to delete his account. But when user choose to get free 3 day premium he can click Get free Badoo Premium and can enjoy free premium for three days, Here i found a race condition...