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GHSA-3w94-vq2x-v5wr
No affected components available
Impact
Prior to ethereum crate v0.18.0, signature malleability (according to EIP-2) was only checked for "legacy" transactions, but not for EIP-2930, EIP-1559 and EIP-7702 transactions.
This is a specification deviation and therefore a high severity advisory if the ethereum crate is used for Ethereum mainnet. Note that signature malleability itself is not a security issue, and therefore if the ethereum crate is used on a single-implementation blockchain, it's a low/informational severity advisory.
Patches
The issue is fixed in ethereum v0.18.0
Workarounds
You can also manually check transaction malleability outside of the crate. But it's recommended to simply upgrade the version.
References
See PR: https://github.com/rust-ethereum/ethereum/pull/67
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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