Teller
Submit a BugProgram Overview
Teller is an algorithmic credit risk protocol, built to enable the creation of decentralized lending markets that can offer unsecured loans. The protocol’s unique cloud-based infrastructure can connect to, and privately compute credit and banking data to generate individual loan terms based on a users’ creditworthiness. Teller Protocol was designed to develop decentralized loan products, without collateralized debt, reducing consumer risk and costs. Teller can interoperate with centralized finance data, offering everyone the freedom to develop a new wealth of trustless financial instruments.
For more information about Teller, please visit https://www.teller.finance/.
The bug bounty program covers its smart contracts and app and is focused on preventing the following impacts:
- Thefts and freezing of principal of any amount
- Leak of user data
- Thefts and freezing of unclaimed yield of any amount
Rewards by Threat Level
Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System. This is a simplified 5-level scale, with separate scales for websites/apps and smart contracts/blockchains, encompassing everything from consequence of exploitation to privilege required to likelihood of a successful exploit.
All web and app bugs must come with a PoC in order to be accepted. Additionally, all smart contract vulnerabilities that are Medium or higher are required to have a PoC for the consideration of a reward.
Payouts are handled by the Teller team directly and are denominated in USD. Payouts are done in ETH.
Smart Contract
- Critical
- Level
- USD $50,000
- Payout
- High
- Level
- USD $10,000
- Payout
- Medium
- Level
- USD $1,000
- Payout
- Low
- Level
- USD $500
- Payout
Websites and Applications
- Critical
- Level
- USD $5,000
- Payout
- High
- Level
- USD $2,000
- Payout
- Medium
- Level
- USD $500
- Payout
Assets in scope
- Smart Contract - AssetSettingsDataFacetType
- Smart Contract - AssetSettingsFacetType
- Smart Contract - ChainlinkAggFacetType
- Smart Contract - CollateralEscrowBeaconFactoryType
- Smart Contract - CollateralEscrow_V1Type
- Smart Contract - CollateralFacetType
- Smart Contract - CompoundFacetType
- Smart Contract - CreateLoanFacetType
- Smart Contract - DefaultProxyAdminType
- Smart Contract - EscrowBeaconFactoryType
- Smart Contract - CollateralEscrow_V1Type
- Smart Contract - InitializeableBeaconProxyType
- Smart Contract - LendingFacetType
- Smart Contract - LoadDataFacetType
- Smart Contract - LoansEscrow_V1Type
- Smart Contract - NFTFacetType
- Smart Contract - PausableFacetType
- Smart Contract - PlatformSettingsFacetType
- Smart Contract - PriceAggFacetType
- Smart Contract - RepayFacetType
- Smart Contract - SettingsFacetType
- Smart Contract - SignersFacetType
- Smart Contract - TTokenBeaconFactoryType
- Smart Contract - TTokenCompoundStrategy_1Type
- Smart Contract - TToken_V2Type
- Smart Contract - TellerDiamondType
- Smart Contract - TellerNFTType
- Smart Contract - TellerNFTDictionary (Proxy)Type
- Smart Contract - TellerNFTDictionary (Implementation)Type
- Smart Contract - UniswapFacetType
- Smart Contract - ent_addMerkle_NFTDistributor_v1Type
- Smart Contract - ent_claim_NFTDistributor_v1Type
- Smart Contract - ent_initialize_NFTDistributor_v1Type
- Smart Contract - ent_moveMerkle_NFTDistributor_v1Type
- Smart Contract - ent_upgradeNFTV2_NFTDistributor_v1Type
- Smart Contract - ext_distributor_NFT_v1Type
- Smart Contract - TellerNFTDistributorType
- Smart Contract - TellerNFT_V2 (Proxy)Type
- Smart Contract - TellerNFT_V2 (Implementation)Type
- Websites and ApplicationsType
- Websites and ApplicationsType
Only web/app vulnerabilities that directly affect the web/app assets listed in this table are accepted within the bug bounty program. All others are out-of-scope.
Impacts in scope
Only the following impacts are accepted within this bug bounty program. All other impacts are not considered as in-scope, even if they affect something in the assets in scope table.
Smart Contract
- Direct theft of any user funds, whether at-rest or in-motion, other than unclaimed yieldCriticalImpact
- Permanent freezing of fundsCriticalImpact
- Theft of unclaimed yieldHighImpact
- Temporary freezing of funds for any amount of timeHighImpact
- Permanent freezing of unclaimed yieldHighImpact
- Griefing (e.g. no profit motive for an attacker, but damage to the users or the protocol)MediumImpact
- Theft of gasMediumImpact
- Unbounded gas consumptionMediumImpact
Websites and Applications
- Ability to execute system commandsCriticalImpact
- Extract Sensitive data/files from the server such as /etc/passwdCriticalImpact
- Stealing User CookiesCriticalImpact
- Taking Down the application/websiteCriticalImpact
- Signing transactions for other usersCriticalImpact
- Bypassing AuthenticationCriticalImpact
- Redirection of user deposits and withdrawalsCriticalImpact
- Subdomain takeover resulting in financial loss (applicable for subdomains with addresses published)CriticalImpact
- Wallet interaction modification resulting in financial lossCriticalImpact
- Direct theft of user fundsCriticalImpact
- Tampering with transactions submitted to the user’s walletCriticalImpact
- Submitting malicious transactions to an already-connected walletCriticalImpact
- Spoofing content on the target application (Persistent)HighImpact
- Users Confidential information disclosure such as EmailHighImpact
- Subdomain Takeover without financial loss (applicable for subdomains with no addresses published)HighImpact
- Privilege escalation to access unauthorized functionalitiesHighImpact
Out of Scope & Rules
The following vulnerabilities are excluded from the rewards for this bug bounty program:
- Attacks that the reporter has already exploited themselves, leading to damage
- Attacks requiring access to leaked keys/credentials
- Attacks requiring access to privileged addresses (governance, strategist)
Smart Contracts and Blockchain
- Incorrect data supplied by third party oracles
- Not to exclude oracle manipulation/flash loan attacks
- Basic economic governance attacks (e.g. 51% attack)
- Lack of liquidity
- Best practice critiques
- Sybil attacks
Websites and Apps
- Theoretical vulnerabilities without any proof or demonstration
- Content spoofing / Text injection issues
- Self-XSS
- Captcha bypass using OCR
- CSRF with no security impact (logout CSRF, change language, etc.)
- Missing HTTP Security Headers (such as X-FRAME-OPTIONS) or cookie security flags (such as “httponly”)
- Server-side information disclosure such as IPs, server names, and most stack traces
- Vulnerabilities used to enumerate or confirm the existence of users or tenants
- Vulnerabilities requiring unlikely user actions
- URL Redirects (unless combined with another vulnerability to produce a more severe vulnerability)
- Lack of SSL/TLS best practices
- DDoS vulnerabilities
- Attacks requiring privileged access from within the organization
- Feature requests
- Best practices
The following activities are prohibited by this bug bounty program:
- Any testing with mainnet or public testnet contracts; all testing should be done on private testnets
- Any testing with pricing oracles or third party smart contracts
- Attempting phishing or other social engineering attacks against our employees and/or customers
- Any testing with third party systems and applications (e.g. browser extensions) as well as websites (e.g. SSO providers, advertising networks)
- Any denial of service attacks
- Automated testing of services that generates significant amounts of traffic
- Public disclosure of an unpatched vulnerability in an embargoed bounty