The Ethereum Bounty Program provides bounties for bugs. We call on our community and all bug bounty hunters to help identify bugs in the protocols and clients. Earn rewards for finding a vulnerability and get a place on our leaderboard. See Rules & Rewards section for details.
Martin Holst Swende*
Yoonho Kim (team Hithereum)
* No longer eligible for bounties, since October 2016. Martin now works for the Ethereum Foundation and, among other things, manages the bug bounty program.
Please have a look at the bullets below before starting your hunt!
The value of rewards paid out will vary depending on Severity. The severity is calculated according to the OWASP risk rating model based on Impact and Likelihood :
Reward sizes are guided by the rules below, but are in the end, determined at the sole discretion of the Ethereum Foundation bug bounty panel.
1 point currently corresponds to 1 USD (payable in ETH or BTC), something which may change without prior notice.
OBS! Between 2017-09-19 and Byzantium hard-fork on Mainnet, each point corresponds to 2 USD for issues related to cross-client consensus or geth DoS vulnerabilities.
Beyond monetary rewards, every bounty is also eligible for listing on our leaderboard with points accumulating over the course of the program.
In addition to Severity, other variables are also considered when the Ethereum Foundation bug bounty panel decides the score, including (but not limited to):
Important Legal Information
The bug bounty program is an experimental and discretionary rewards program for our active Ethereum community to encourage and reward those who are helping to improve the platform. It is not a competition. You should know that we can cancel the program at any time, and awards are at the sole discretion of Ethereum Foundation bug bounty panel. In addition, we are not able to issue awards to individuals who are on sanctions lists or who are in countries on sanctions lists (e.g. North Korea, Iran, etc). You are responsible for all taxes. All awards are subject to applicable law. Finally, your testing must not violate any law or compromise any data that is not yours.
Our bug bounty program spans end-to-end: from soundness of protocols (such as the blockchain consensus model, the wire and p2p protocols, proof of work, etc) and protocol/implementation compliance to network security and consensus integrity. Classical client security as well as security of cryptographic primitives are also part of the program. Details on the scope follow:
The idea for Ethereum was initially published in the White Paper. This concept has been realized in a few protocols and algorithms up for scrutiny:
Help identify flaws such as ones found in the yellow paper, relating to:
Assuming that the protocols and algorithms are flawless, does a client implementation conform to the formal protocol specification? Issues could include:
An example of a potential issue in this category is Bitcoin’s “zero-day” flaw, which required a hard-fork.
This category focuses on generalized attacks on the whole network or a subset of it:
Here is an example from bitcoin of a global network based DoS scenario.
Attacks on a single Go client relating to the Ethereum protocol:
This category addresses more classical security issues:
Here is an example of a problem hidden in an external library.
This category includes:
This category includes:
Here is an example of a submitted Solidity bug.
This category includes:
Here is an example of a bug in the initial ENS registrar that would have allowed people to bid during the reveal period, thus affecting the legitimacy of auction results.
Here is an example of a real issue which was previously present in the Go client:
Description: Remote Denial-of-service using non-validated blocks
Attack scenario: An attacker can send blocks that may require a high amount of computation (the maximum gasLimit) but has no proof-of-work. If the attacker sends blocks continuously, the attacker may force the victim node to 100% CPU utilization.
Impact: An attacker can abuse CPU utilization on remote nodes, possibly causing full DoS.
Components: Go client version v0.6.8
Reproduction: Send a block to a Go node that contains many txs but no valid PoW.
Details: Blocks are validated in the method
Process(Block, dontReact). This method performs expensive CPU-intensive tasks, such as executing transactions (
sm.ApplyDiff) and afterward it verifies the proof-of-work (
sm.ValidateBlock()). This allows an attacker to send blocks that may require a high amount of computation (the maximum
gasLimit) but has no proof-of-work. If the attacker sends blocks continuously, the attacker may force the victim node to 100% CPU utilization.
Fix: Invert the order of the checks.
No end date is currently set. See the “News & Updates” section above, and the Ethereum blog for the latest news.
Rewards are paid out in ETH or BTC after the submission has been validated, usually a few days later. Local laws require us to ask for proof of your identity. In addition, we will need your ETH/BTC address.
Yes. We can donate your reward to an established charitable organization of your choice.
We aim to respond to submissions as fast as possible. Feel free to email us if you have not received a response within a day or two.
Submitting anonymously or with a pseudonym is OK, but will make you ineligible for BTC rewards. To be eligible for BTC rewards, we require your real name and a proof of your identity. Donating your bounty to a charity doesn’t require your identity.
Please let us know if you do not want your name/nick displayed on the leader board.
Every found vulnerability / issue is assigned a score. Bounty hunters are ranked on our leaderboard by total points.
Email us at email@example.com.
AE96 ED96 9E47 9B00 84F3 E17F E88D 3334 FA5F 6A0A
-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1 mQINBFgl3tgBEAC8A1tUBkD9YV+eLrOmtgy+/JS/H9RoZvkg3K1WZ8IYfj6iIRaY neAk3Bp182GUPVz/zhKr2g0tMXIScDR3EnaDsY+Qg+JqQl8NOG+Cikr1nnkG2on9 L8c8yiqry1ZTCmYMqCa2acTFqnyuXJ482aZNtB4QG2BpzfhW4k8YThpegk/EoRUi m+y7buJDtoNf7YILlhDQXN8qlHB02DWOVUihph9tUIFsPK6BvTr9SIr/eG6j6k0b fUo9pexOn7LS4SojoJmsm/5dp6AoKlac48cZU5zwR9AYcq/nvkrfmf2WkObg/xRd EvKZzn05jRopmAIwmoC3CiLmqCHPmT5a29vEob/yPFE335k+ujjZCPOu7OwjzDk7 M0zMSfnNfDq8bXh16nn+ueBxJ0NzgD1oC6c2PhM+XRQCXChoyI8vbfp4dGvCvYqv QAE1bWjqnumZ/7vUPgZN6gDfiAzG2mUxC2SeFBhacgzDvtQls+uuvm+FnQOUgg2H h8x2zgoZ7kqV29wjaUPFREuew7e+Th5BxielnzOfVycVXeSuvvIn6cd3g/s8mX1c 2kLSXJR7+KdWDrIrR5Az0kwAqFZt6B6QTlDrPswu3mxsm5TzMbny0PsbL/HBM+GZ EZCjMXxB8bqV2eSaktjnSlUNX1VXxyOxXA+ZG2jwpr51egi57riVRXokrQARAQAB tDlFdGhlcmV1bSBGb3VuZGF0aW9uIFNlY3VyaXR5IFRlYW0gPHNlY3VyaXR5QGV0 aGVyZXVtLm9yZz6JAj4EEwECACgCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheA BQJaCWH6BQkFo2BYAAoJEOiNMzT6X2oK+DEP/3H6dxkm0hvHZKoHLVuuxcu3EHYo k5sd3MMWPrZSN8qzZnY7ayEDMxnarWOizc+2jfOxfJlzX/g8lR1/fsHdWPFPhPoV Qk8ygrHn1H8U8+rpw/U03BqmqHpYCDzJ+CIis9UWROniqXw1nuqu/FtWOsdWxNKh jUo6k/0EsaXsxRPzgJv7fEUcVcQ7as/C3x9sy3muc2gvgA4/BKoGPb1/U0GuA8lV fDIDshAggmnSUAg+TuYSAAdoFQ1sKwFMPigcLJF2eyKuK3iUyixJrec/c4LSf3wA cGghbeuqI8INP0Y2zvXDQN2cByxsFAuoZG+m0cyKGaDH2MVUvOKKYqn/03qvrf15 AWAsW0l0yQwOTCo3FbsNzemClm5Bj/xH0E4XuwXwChcMCMOWJrFoxyvCEI+keoQc c08/a8/MtS7vBAABXwOziSmm6CNqmzpWrh/fDrjlJlba9U3MxzvqU3IFlTdMratv 6V+SgX+L25lCzW4NxxUavoB8fAlvo8lxpHKo24FP+RcLQ8XqkU3RiUsgRjQRFOqQ TaJcsp8mimmiYyf24mNu6b48pi+a5c/eQR9w59emeEUZqsJU+nqv8BWIIp7o4Agh NYnKjkhPlY5e1fLVfAHIADZFynWwRPkPMJSrBiP5EtcOFxQGHGjRxU/KjXkvE0hV xYb1PB8pWMTu/beeiQI+BBMBAgAoBQJYJd7YAhsDBQkB4TOABgsJCAcDAgYVCAIJ CgsEFgIDAQIeAQIXgAAKCRDojTM0+l9qCplDD/9IZ2i+m1cnqQKtiyHbyFGx32oL fzqPylX2bOG5DPsSTorSUdJMGVfT04oVxXc4S/2DVnNvi7RAbSiLapCWSplgtBOj j1xlblOoXxT3m7s1XHGCX5tENxI9fVSSPVKJn+fQaWpPB2MhBA+1lUI6GJ+11T7K J8LrP/fiw1/nOb7rW61HW44Gtyox23sA/d1+DsFVaF8hxJlNj5coPKr8xWzQ8pQl juzdjHDukjevuw4rRmRq9vozvj9keEU9XJ5dldyEVXFmdDk7KT0p0Rla9nxYhzf/ r/Bv8Bzy0HCWRb2D31BjXXGG05oVnYmNGxGFxYja4MwgrMmne3ilEVjfUJsapsqi w41BAyQgIdfREulYN7ahsF5PrjVAqBd9IGtE8ULelF2SQxEBQBngEkP0ahP6tRAL i7/CBjPKOyKijtqVny7qrGOnU2ygcA88/WDibexDhrjz0Gx8WmErU7rIWZiZ5u4Y vJYVRo0+6rBCXRPeSJfiP5h1p17Anr2l42boAYslfcrzquB8MHtrNcyn650OLtHG nbxgIdniKrpuzGN6Opw+O2id2JhD1/1p4SOemwAmthplr1MIyOHNP3q93rEj2J7h 5zPS/AJuKkMDFUpslPNLQjCOwPXtdzL7/kUZGBSyez1T3TaW1uY6l9XaJJRaSn+v 1zPgfp4GJ3lPs4AlAbQ0RXRoZXJldW0gRm91bmRhdGlvbiBCdWcgQm91bnR5IDxi b3VudHlAZXRoZXJldW0ub3JnPokCPgQTAQIAKAIbAwYLCQgHAwIGFQgCCQoLBBYC AwECHgECF4AFAloJYfoFCQWjYFgACgkQ6I0zNPpfagoENg/+LnSaVeMxiGVtcjWl b7Xd73yrEy4uxiESS1AalW9mMf7oZzfI05f7QIQlaLAkNac74vZDJbPKjtb7tpMO RFhRZMCveq6CPKU6pd1SI8IUVUKwpEe6AJP3lHdVP57dquieFE2HlYKm6uHbCGWU 0cjyTA+uu2KbgCHGmofsPY/xOcZLGEHTHqa5w60JJAQm+BSDKnw8wTyrxGvA3EK/ ePSvOZMYa+iw6vYuZeBIMbdiXR/A2keBi3GuvqB8tDMj7P22TrH5mVDm3zNqGYD6 amDPeiWp4cztY3aZyLcgYotqXPpDceZzDn+HopBPzAb/llCdE7bVswKRhphVMw4b bhL0R/TQY7Sf6TK2LKSBrjv0DWOSijikE71SJcBnJvHU7EpKrQQ0lMGclm3ynyji Nf0YTPXQt4I+fwTmOew2GFeK3UytNWbWI7oXX7Nm4bj9bhf3IJ0kmZb/Gs73+xII e7Rz52Mby436tWyQIQiF9ITYNGvNf53TwBBZMn0pKPiTyr3Ur7FHEotkEOFNh1// 4zQY10XxuBdLrYGyZ4V8xHJM+oKre8Eg2R9qHXVbjvErHE+7CvgnV7YUip0criPr BlKRvuoJaSliH2JFhSjWVrkPmFGrWN0BAx10yIqMnEplfKeHf4P9Elek3oInS8WP G1zJG6s/t5+hQK0X37+TB+6rd3GJAj4EEwECACgFAlgl4TsCGwMFCQHhM4AGCwkI BwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEOiNMzT6X2oKzf8P/iIKd77WHTbp4pMN 8h52HyZJtDJmjA1DPZrbGl1TesW/Z9uTd12txlgqZnbG2GfN9+LSP6EOPzR6v2xC OVhR+RdWhZDJJuQCVS7lJIqQrZgmeTZG0TyQPZdLjVFBOrrhVwYX+HXbu429IzHr URf5InyR1QgqOXyElDYS6e28HFqvaoA0DWTWDDqOLPVl+U5fuceIE2XXdv3AGLeP Yf8J5MPobjPiZtBqI6S6iENY2Yn35qLX+axeC/iYSCHVtFuCCIdb/QYR1ZZV8Ps/ aI9DwC7LU+YfPw7iqCIoqxSeA3o1PORkdSigEg3jtfRv5UqVo9a0oBb9jdoADsat F/gW0E7mto3XGOiaR0eB9SSdsM3x7Bz4A0HIGNaxpZo1RWqlO91leP4c13Px7ISv 5OGXfLg+M8qb+qxbGd1HpitGi9s1y1aVfEj1kOtZ0tN8eu+Upg5WKwPNBDX3ar7J 9NCULgVSL+E79FG+zXw62gxiQrLfKzm4wU/9L5wVkwQnm29hLJ0tokrSBZFnc/1l 7OC+GM63tYicKkY4rqmoWUeYx7IwFH9mtDtvR1RxO85RbQhZizwpZpdpRkH0DqZu ZJRmRa5r7rPqmfa7d+VIFhz2Xs8pJMLVqxTsLKcLglmjw7aOrYG0SWeH7YraXWGD N3SlvSBiVwcK7QUKzLLvpadLwxfsuQINBFgl3tgBEACbgq6HTN5gEBi0lkD/MafI nmNi+59U5gRGYqk46WlfRjhHudXjDpgD0lolGb4hYontkMaKRlCg2Rvgjvk3Zve0 PKWjKw7gr8YBa9fMFY8BhAXI32OdyI9rFhxEZFfWAfwKVmT19BdeAQRFvcfd+8w8 f1XVc+zddULMJFBTr+xKDlIRWwTkdLPQeWbjo0eHl/g4tuLiLrTxVbnj26bf+2+1 DbM/w5VavzPrkviHqvKe/QP/gay4QDViWvFgLb90idfAHIdsPgflp0VDS5rVHFL6 D73rSRdIRo3I8c8mYoNjSR4XDuvgOkAKW9LR3pvouFHHjp6Fr0GesRbrbb2EG66i PsR99MQ7FqIL9VMHPm2mtR+XvbnKkH2rYyEqaMbSdk29jGapkAWle4sIhSKk749A 4tGkHl08KZ2N9o6GrfUehP/V2eJLaph2DioFL1HxRryrKy80QQKLMJRekxigq8gr eW8xB4zuf9Mkuou+RHNmo8PebHjFstLigiD6/zP2e+4tUmrT0/JTGOShoGMl8Rt0 VRxdPImKun+4LOXbfOxArOSkY6i35+gsgkkSy1gTJE0BY3S9auT6+YrglY/TWPQ9 IJxWVOKlT+3WIp5wJu2bBKQ420VLqDYzkoWytel/bM1ACUtipMiIVeUs2uFiRjpz A1Wy0QHKPTdSuGlJPRrfcQARAQABiQIlBBgBAgAPAhsMBQJaCWIIBQkFo2BYAAoJ EOiNMzT6X2oKgSwQAKKs7BGF8TyZeIEO2EUK7R2bdQDCdSGZY06tqLFg3IHMGxDM b/7FVoa2AEsFgv6xpoebxBB5zkhUk7lslgxvKiSLYjxfNjTBltfiFJ+eQnf+OTs8 KeR51lLa66rvIH2qUzkNDCCTF45H4wIDpV05AXhBjKYkrDCrtey1rQyFp5fxI+0I Q1UKKXvzZK4GdxhxDbOUSd38MYy93nqcmclGSGK/gF8XiyuVjeifDCM6+T1NQTX0 K9lneidcqtBDvlggJTLJtQPO33o5EHzXSiud+dKth1uUhZOFEaYRZoye1YE3yB0T NOOE8fXlvu8iuIAMBSDL9ep6sEIaXYwoD60I2gHdWD0lkP0DOjGQpi4ouXM3Edsd 5MTi0MDRNTij431kn8T/D0LCgmoUmYYMBgbwFhXr67axPZlKjrqR0z3F/Elv0ZPP cVg1tNznsALYQ9Ovl6b5M3cJ5GapbbvNWC7yEE1qScl9HiMxjt/H6aPastH63/7w cN0TslW+zRBy05VNJvpWGStQXcngsSUeJtI1Gd992YNjUJq4/Lih6Z1TlwcFVap+ cTcDptoUvXYGg/9mRNNPZwErSfIJ0Ibnx9wPVuRN6NiCLOt2mtKp2F1pM6AOQPpZ 85vEh6I8i6OaO0w/Z0UHBwvpY6jDUliaROsWUQsqz78Z34CVj4cy6vPW2EF4 =r6KK -----END PGP PUBLIC KEY BLOCK-----