Axelar Network

Axelar Network is a decentralized interoperability network connecting all blockchains, assets and apps through a universal set of protocols and APIs.

For more information about Axelar Network, please visit https://axelar.network/.

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System V2.2. This is a simplified 5-level scale, with separate scales for websites/apps, smart contracts, and blockchains/DLTs, focusing on the impact of the vulnerability reported.

All Critical Blockchain/DLT and Smart Contract bug reports require a PoC to be eligible for a reward. Explanations and statements are not accepted as PoC and code is required.

In addition to Immunefi’s Vulnerability Severity Classification System, Axelar Network classifies the following vulnerabilities as follows. In case of discrepancy, the one below will be followed.

Critical

• Loss of funds of over or equal to $500,000

High

• Vulnerabilities that result in loss of funds of less than $500,000

Medium

• Vulnerabilities that result in loss of funds of less than $50,000

Low

• Vulnerabilities that result in loss of funds of less than $10,000

Any vulnerabilities discussed within the github issues below are considered vulnerabilities already known to Axelar, and will not be eligible for a reward:

• https://github.com/axelarnetwork/axelar-core/issues
• https://github.com/axelarnetwork/axelar-cgp-solidity/issues
• https://github.com/axelarnetwork/tofnd/issues
• https://github.com/axelarnetwork/tofn/issues
• https://github.com/axelarnetwork/axelarate-community/issues

Critical blockchain/ smart contract vulnerabilities are capped at 10% of economic damage, primarily taking into consideration funds at risk, but also PR and branding aspects, at the discretion of the team. There is no minimum reward for Critical smart contract vulnerabilities.

Bug reports that are classified as High will be rewarded USD 10 000 and up to USD 50 000 at the Axelar team’s discretion. High impact rewards for the project bug bounty program are scaled based on an internally established team criteria, taking into account the exploitability of the bug, the impact it causes, and the likelihood of the vulnerability presenting itself, which is especially factored in with bug reports requiring multiple conditions to be met that are currently not in-place. However, there is a minimum reward of USD 10 000 for High severity level, rewards will be provided at the determined fair value by the team depending on these conditions, assuming that the bug report is in-scope of the bug bounty program. Only impacts that cause severe network disruption or a loss of funds of over or equal to $2M is considered as Critical

Axelar Network requires KYC to be done for all bug bounty hunters submitting a report and wanting a reward. We use a service provider, Jumio, to collect this information and will send you a link to the KYC application if your report is deemed eligible for bounties. The information needed is

• A piece of government issued photo ID such as passport or driver’s license
• A live webcam facial recognition scan to match biometrics with submitted photo ID

The collection of this information will be done by the project team.

Payouts are handled by the Axelar Network team directly and are denominated in USD. However, payouts are done in USDC.

Blockchain/DLT

Smart Contract

All smart contracts of Axelar Network can be found at https://github.com/axelarnetwork/solidity-cgp-gateway/tree/main/src. However, only those in the Assets in Scope table are considered as in-scope of the bug bounty program. In tofn, the only thing in scope is src/ecdsa/mod.rs and it’s project dependencies, excluding third-party dependencies. Only tofnd pieces relating to the mod.rs file in tofn is in scope. For the Axelar Gateway contracts, although only the proxy contracts are only listed as in-scope, the respective implementation contracts are also counted in scope. When reporting a bug, please make sure to select the relevant proxy smart contract as the target.

Though only the proxy contracts are listed as in-scope, current implementation and any further updates to the implementation contracts are considered in scope. When reporting a bug, please make sure to select the relevant proxy smart contract as the target.

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
• Centralization risks
• Third party dependencies, especially Cosmos SDK dependencies
• In the tofn repository, the only thing in scope is src/ecdsa/mod.rs and it’s project dependencies, excluding third-party dependencies
• In the tofnd repository, the only thing in scope is parts related to src/ecdsa/mod.rs in tofn repository

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