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CVE-2023-34449— ink! vulnerable to incorrect decoding of storage value when using `DelegateCall`

Quick assessment

Affected
paritytech ink
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ink!是一个 eDSL，为基于 Substrate 框架构建的区块链编写智能合约。 ink! 4.0.0及之前版本存在安全漏洞，该漏洞源于使用DelegateCall时存储值的解码不正确。

CVSS 5.3 · Medium EPSS 0.97% · P61

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2023-34449

Vulnerability Information
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Vulnerability Title
ink! vulnerable to incorrect decoding of storage value when using `DelegateCall`
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5
Vulnerability Title
ink! 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ink!是一个 eDSL，为基于 Substrate 框架构建的区块链编写智能合约。 ink! 4.0.0及之前版本存在安全漏洞，该漏洞源于使用DelegateCall时存储值的解码不正确。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
paritytech ink >= 4.0.0, < 4.2.1 -

II. Public POCs for CVE-2023-34449

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III. Intelligence Information for CVE-2023-34449

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Patches & Fixes for CVE-2023-34449 (2)

Vendor Advisories for CVE-2023-34449 (1)

Other References for CVE-2023-34449 (2)

IV. Related Vulnerabilities

Same vendor: paritytech
Same weakness: CWE-754

V. Comments for CVE-2023-34449

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