CVE-2022-29219
Prior to version 0.36.0, there is a possible consensus split given maliciously-crafted `AttesterSlashing` or `ProposerSlashing` being included on-chain.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.29%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Lodestar is a TypeScript implementation of the Ethereum Consensus specification. Prior to version 0.36.0, there is a possible consensus split given maliciously-crafted `AttesterSlashing` or `ProposerSlashing` being included on-chain. Because the developers represent `uint64` values as native javascript `number`s, there is an issue when those variables with large (greater than 2^53) `uint64` values are included on chain. In those cases, Lodestar may view valid_`AttesterSlashing` or `ProposerSlashing` as invalid, due to rounding errors in large `number` values. This causes a consensus split, where Lodestar nodes are forked away from the main network. Similarly, Lodestar may consider invalid `ProposerSlashing` as valid, thus including in proposed blocks that will be considered invalid by the network. Version 0.36.0 contains a fix for this issue. As a workaround, use `BigInt` to represent `Slot` and `Epoch` values in `AttesterSlashing` and `ProposerSlashing` objects. `BigInt` is too slow to be used in all `Slot` and `Epoch` cases, so one may carefully use `BigInt` just where necessary for consensus.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 1.29% probability · 69th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- chainsafe/lodestar
- Source
- security-advisories@github.com
References
- https://github.com/ChainSafe/lodestar/pull/3977Patch, Third Party Advisory
- https://github.com/ChainSafe/lodestar/releases/tag/v0.36.0Release Notes, Third Party Advisory
- https://github.com/ChainSafe/lodestar/security/advisories/GHSA-cvj7-5f3c-9vg9Patch, Third Party Advisory
- https://github.com/ChainSafe/lodestar/pull/3977Patch, Third Party Advisory
- https://github.com/ChainSafe/lodestar/releases/tag/v0.36.0Release Notes, Third Party Advisory
- https://github.com/ChainSafe/lodestar/security/advisories/GHSA-cvj7-5f3c-9vg9Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.