CVSS 3.1
5.3 mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NCVE-2023-34449
Medium (5.3) in parity ink\!. EPSS 1.0% chance of exploitation in the next 30 days. Fixed in ink 4.2.1.
ink! is an embedded domain specific language to write smart contracts in Rust for blockchains built on the Substrate framework. Starting in version 4.0.0 and prior to version 4.2.1, the return value when using delegate call mechanics, either through `CallBuilder::delegate` or `ink_env::invoke_contract_delegate`, is decoded incorrectly. This bug was related to the mechanics around decoding a call's return buffer, which was changed as part of pull request 1450. Since this feature was only released in ink! 4.0.0, no previous versions are affected. Users who have an ink! 4.x series contract should upgrade to 4.2.1 to receive a patch.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-253, CWE-754
- Published
- Modified
- Record from
- the NVD, synced
Affected
- parity:ink\!
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-853p-5678-hv8f | crates.io | ink | >=4.0.0 <4.2.1 | 4.2.1 |
| GHSA-853p-5678-hv8f | crates.io | ink_env | >=4.0.0 <4.2.1 | 4.2.1 |
References
- https://docs.rs/ink_env/4.2.0/ink_env/call/struct.CallBuilder.html#method.delegate
- https://docs.rs/ink_env/4.2.0/ink_env/fn.invoke_contract_delegate.html
- https://github.com/paritytech/ink/commit/f1407ee9f87e5f64d467a22d26ee88f61db7f3db
- https://github.com/paritytech/ink/pull/1450
- https://github.com/paritytech/ink/security/advisories/GHSA-853p-5678-hv8f