GitHub Advisoryadvisory · crates.io
GHSA-hhc4-47rh-cr34 Incorrect is_static parameter for custom stateful precompiles in SputnikVM (evm)
MEDIUM
Official page ↗
- Aliases
- CVE-2022-39354
- Ecosystem
- crates.io
- Packages
- evm
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- Weaknesses
- CWE-670
- Reviewed
- 2022-10-25
Affected packages
• crates.io evm: < 0.36.0 → fixed in 0.36.0
Description
Impact
A custom stateful precompile can use the `is_static` parameter to determine if the call is executed in a static context (via `STATICCALL`), and thus decide if stateful operations should be done. Previously, the passed `is_static` parameter was incorrect -- it was only set to `true` if the call comes from a direct `STATICCALL` opcode. However, once a static call context is entered, it should stay static.
The issue only impacts custom precompiles that actually uses `is_static`. The maintainers estimate the usage is low. However, for those affected, it can lead to possible incorrect state transitions.
Patches
PR: https://github.com/rust-blockchain/evm/pull/133
Released in v0.36.0.
Older patch versions can be released on request if anyone needs them. Simply contact @sorpaas by email to request it.
For more information
If you have any questions or comments about this advisory:
• Open an issue in evm repo
• Email Wei at [email protected]
Related
Alias · CVE (1)
- CVE-2022-39354 SputnikVM, also called evm, is a Rust implementation of Ethereum Virtual Machine. vulnerability
Weakness · CWE (1)
- CWE-670 Always-Incorrect Control Flow Implementation weakness