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FAssets

Flare is the blockchain for data. It is a layer-1, EVM smart contract platform designed to expand the utility of blockchain by delivering data certainty for dApp builders. FAssets is a trustless, over-collateralized bridge built on Flare that connects non smart contract networks to Flare/Songbird.

Maximum Bounty
$250,000
Live Since
10 February 2025
Last Updated
13 March 2025
  • Triaged by Immunefi

  • PoC required

Rewards

FAssets provides rewards in FLR on Flare, denominated in USD.

Rewards by Threat Level

Blockchain/DLT
Critical
Flat: $50,000
Primacy of Impact
High
Max: $30,000Min: $10,000
Primacy of Impact
Medium
Flat: $5,000
Primacy of Impact
Critical Reward Calculation

Reward amount is 10% of the funds directly affected, capped at the maximum critical reward of:

$50,000
The reward is dependent on the ratio between the funds at risk, which includes all affected projects on top of the respective blockchain/DLT, and the market cap according to the average between CoinMarketCap.com and CoinGecko.com, calculated at the time the bug report is submitted.
Smart Contract
Critical
Max: $250,000Min: $50,000
Primacy of Impact
High
Max: $50,000Min: $10,000
Primacy of Impact
Medium
Flat: $5,000
Primacy of Impact
Low
Flat: $1,000
Primacy of Impact
Critical Reward Calculation

Mainnet assets:

Reward amount is 10% of the funds directly affected up to a maximum of:

$250,000

Minimum reward to discourage security researchers from withholding a bug report:

$50,000

Reward Calculation for Critical Level Reports

For critical smart contract bugs, the reward amount is 10% of the funds directly affected up to a maximum of USD 250 000. The calculation of the amount of funds at risk is based on the time and date the bug report is submitted. However, a minimum reward of USD 100 000 is to be rewarded in order to incentivize security researchers against withholding a critical bug report.

Repeatable Attack Limitations

If the smart contract where the vulnerability exists can be upgraded or paused, only the initial attack will be considered for a reward. This is because the project can mitigate the risk of further exploitation by upgrading or pausing the specific component where the vulnerability exists. The reward amount will depend on the severity of the impact and the funds at risk.

For critical repeatable attacks on smart contracts that cannot be upgraded or paused, the project will consider the cumulative impact of the repeatable attacks to determine the reward. This is because the project cannot prevent the attacker from repeatedly exploiting the vulnerability until all funds are drained and/or other irreversible damage is done. Therefore, this warrants a reward equivalent to 10% of funds at risk, capped at the maximum critical reward.

Reward Calculation for High-Level Reports

High vulnerabilities concerning theft/permanent freezing of unclaimed yield/royalties are rewarded within a range of USD 10 000 to USD 100 000 depending on the funds at risk, capped at the maximum high reward.

In the event of temporary freezing, the reward doubles from the full frozen value for every additional [24h] that the funds are temporarily frozen, until it reaches the max cap of the high reward. This is because as the duration of the freezing lengthens, the potential for greater damage and subsequent reputational harm intensifies. Thus, by increasing the reward proportionally with the frozen duration, the project ensures stronger incentives for disclosing bugs of this nature.

Flare adheres to the Primacy of Impact for the following levels:

  • Smart Contract - Critical
  • Smart Contract - High

Primacy of Impact means that priority is given to impact rather than to a specific asset. This encourages security researchers to report on all bugs with an in-scope impact, even if the affected assets are not in scope.

Program Overview

Flare is the blockchain for data. It is a layer-1, EVM smart contract platform designed to expand the utility of blockchain by delivering data certainty for dApp builders.

FAssets is a trustless, over-collateralized bridge built on Flare that connects non smart contract networks to Flare/Songbird. It enables the creation of wrapped tokens (FAssets) for assets like BTC, DOGE and XRP. The original assets are deposited to the address of an agent and can later be redeemed. The minted FAssets are secured by collateral, which is in the form of ERC20 tokens on Flare/Songbird chain and native tokens (FLR on Flare, SGB on Songbird). These tokens can participate in Flare's DeFi ecosystem.

For more information about Flare, please visit https://flare.network/

The FAsset system maintains security by ensuring every minted Fasset is backed by more value than it represents, creating a safeguard against volatility and protecting users from potential losses.

Two protocols, available on Flare and Songbird blockchains, enable the FAsset system to operate:

  • FTSO contracts which provide decentralised price feeds for multiple tokens.
  • Flare’s Flare data connector, which bridges payment data from any connected chain.

Flare provides rewards in FLR, denominated in USD. For more details about the payment process, please view the Rewards by Threat Level section further below.

Audits

Auditor
All Audits
Completed at
23 January 2025

KYC not required

No KYC information is required for payout processing.

Proof of Concept

Proof of concept is always required for all severities.

Responsible Publication

Category 3: Approval Required

Prohibited Activities

Default prohibited activities
  • Any testing on mainnet or public testnet deployed code; all testing should be done on local-forks of either public testnet or mainnet
  • 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 that are executed against project assets
  • Automated testing of services that generates significant amounts of traffic
  • Public disclosure of an unpatched vulnerability in an embargoed bounty
  • Any other actions prohibited by the Immunefi Rules

Feasibility Limitations

The project may be receiving reports that are valid (the bug and attack vector are real) and cite assets and impacts that are in scope, but there may be obstacles or barriers to executing the attack in the real world. In other words, there is a question about how feasible the attack really is. Conversely, there may also be mitigation measures that projects can take to prevent the impact of the bug, which are not feasible or would require unconventional action and hence, should not be used as reasons for downgrading a bug's severity.

Therefore, Immunefi has developed a set of feasibility limitation standards which by default states what security researchers, as well as projects, can or cannot cite when reviewing a bug report.

Severity
Min. - Max.
Critical
$50k -$250k
High
$10k -$50k
Medium
$5k
Low
$1k
Total Assets in Scope
11