Vulnerability Disclosure Program

1. PURPOSE

At Sonder, one of our founding principles is to “Improve Continuously” which directly translates into our information security program enabling the protection of our guests and customer data as a top priority.

The Sonder Security Team acknowledges the valuable role that honest, independent security researchers and bug reporters play in the overall security of connected systems. As a result, we encourage the responsible reporting of any vulnerability that may be present in our guest properties, mobile application, or company website and services. Sonder is committed to working with security researchers to verify and address potential vulnerabilities that are reported to us.

Please review these terms before you test and/or report a vulnerability to Sonder. We will provide a safe harbor to security researchers as long as they adhere to this policy and are acting in good faith.

If You Are a Current Customer/Guest

If you feel your account may have been compromised, or if you suspect fraudulent behavior, do not hesitate to contact the Sonder support team at https://www.sonder.com/help.

Testing Environments

All possible measures should be taken to avoid production systems and active guest units when performing vulnerability testing to ensure the safety of our guests. Any active and/or occupied guest units are strictly off-limits from vulnerability and penetration testing activities.

Reporting a Security Vulnerability

Please share details of the suspected vulnerability with the Sonder Security Team by sending an email to [email protected]. You can use our PGP Key to encrypt the email.

PGP Fingerprint: ABA7 E6FE 70A1 58E3 97E7 ECE9 7441 6D99 D6B3 BA52

Sharing of vulnerability details outside of our formal reporting process is not permitted and will not result in acceptance by Sonder of your vulnerability report.

Policy

We will investigate all legitimate reports and make every effort to quickly correct any vulnerability. We ask in return that you:

• Provide details of the vulnerability, including information needed to reproduce and validate the vulnerability and a Proof of Concept (POC)

• Make a good faith effort to avoid privacy violations, destruction of data, and interruption or degradation of our services

• Give the Sonder Security Team a reasonable time to correct the issue before making any information public

Program Rules

Sonder encourages the responsible and ethical discovery and reporting of vulnerabilities. The following conduct is expressly prohibited:

• When experimenting, please only attack test accounts you control. A PoC unnecessarily involving accounts of other guests or Sonder employees may be disqualified. It’s also best practice to tell us the accounts you are using for testing even when they are under your control;

• Do not run automated scans without checking with us first;

• Do not test the physical security of Sonder offices, employees, equipment, partners, vendors, or contractors;

• Do not test using social engineering techniques (phishing, spear-phishing, pretexting, etc.);

• Do not perform DoS or DDoS attacks. You are welcome and encouraged to look for vulnerabilities that can be leveraged for DoS or DDoS attacks, we just don’t want you actually exploiting the issue outside of a tightly controlled environment;

• Do not, in any way, attack our end users/guests or engage in the trade of stolen user credentials;

• Do not access, or attempt to access, data, information, or physical building units that do not belong to you;

• Do not conduct vulnerability or penetration testing of occupied Sonder guest units, hotel rooms or buildings;

• Do not violate any applicable law or breach any agreements in order to discover vulnerabilities, or otherwise utilizing unethical means to gain access and/or information;

• Automated findings without proper manual validation are not accepted;

• Only the first reporter is eligible for receiving a reward (refer to the Recognition and Rewards section below).

In Scope & Out of Scope Targets

All parts of our applications and services available to customers/guests are in scope and are our primary interest. Please have a look below for in scope targets.

Sonder uses a number of third-party providers and services. Our disclosure program does not give you permission to perform security testing on their systems. Vulnerabilities in third-party systems will be assessed on a case-by-case basis, and most likely will not be eligible for a reward. The following third-party systems are excluded:

• Direct attacks against any part of AWS’s infrastructure

• Cloudflare

• Okta

Non-­Qualifying Vulnerabilities

Low severity, purely theoretical and best-practice issues do not qualify for submission. Here are some examples:

• Descriptive error messages (e.g., Stack Traces, application or server errors)

• Theoretical sub-domain takeovers with no supporting evidence

• HTTP 404 codes/pages or other HTTP non-200 codes/pages

• Information leakage, fingerprinting/banner disclosure on common/public services

• Disclosure of known public files or directories, (e.g., robots.txt)

• Clickjacking on a public page and issues only exploitable through clickjacking

• CSRF on forms that are available to anonymous users (e.g., the contact form)

• Logout Cross-Site Request Forgery (logout CSRF)

• Presence of application or web browser 'autocomplete' or 'save password' functionality

• Lack of Secure/HTTPOnly flags on non-sensitive Cookies

• Cookies without proper expiration

• Weak Captcha/Captcha Bypass

• Forgot Password page brute force and account lockout not enforced

• OPTIONS HTTP method enabled

• Reflected file downloads

• Missing Cache-control

• Host Header Attack

• Directory Listing

• Missing HTTP security headers, (specifically OWASP list of useful HTTP headers)

• SSL Issues (BEAST, BREACH, Renegotiation attack, Forward secrecy not enabled, weak ciphers)

• Not performing rate limiting on non-login endpoints

• Content spoofing

• HPKP/HSTS preloading

• Generic examples of Host header attacks without evidence of the ability to target a remote victim

• Reports exploiting the behavior of, or vulnerabilities in, outdated browsers

• SPF, DKIM, or DMARC settings & Email Spoofing

• Mixed Content Scripting & Self XSS

• EXIF Geolocation data

• Open WordPress JSON API without an exploit

• Password Reset token leakage (This is known and we will implement a fix)

• Password policy

• Google Maps API key

In Scope

Note: Please run whois lookup before you submit any issues on domains found from Subdomain Scanners.

Recognition and Reward

Sonder is happy to thank security researchers who submit vulnerability reports and are helping us to improve our overall security posture at Sonder for our employees, customers, and guests. Sonder may offer up to $500 in SonderStays credits at the discretion of Sonder for new discoveries of a critical nature.