CVE-2023-34234: @openzeppelin/contracts OpenZeppelin Contracts's Governor Proposal Creation Vulnerability
MODERATECVE-2023-34234 is a MODERATE (CVSS 5.3) openzeppelin contracts's governor proposal creation vulnerability (CWE-862: Missing Authorization) affecting @openzeppelin/contracts libraries in the npm ecosystem. The issue involves openzeppelin contracts's governor proposal creation may be blocked by frontrunning. Remediation is available by upgrading affected packages to version 4.9.1.
CVE-2023-34234 at a Glance
Security Impact
CVSS: 5.3
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
How to Fix CVE-2023-34234
To remediate this vulnerability, upgrade all affected @openzeppelin/contracts dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install @openzeppelin/contracts@4.9.1npm install @openzeppelin/contracts-upgradeable@4.9.1Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls @openzeppelin/contractsHow to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2023-34234, inspect your project dependencies using npm:
npm ls @openzeppelin/contractsAnalyze the terminal output to locate any version of @openzeppelin/contracts in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.9.1), your application is affected.
Note: The npm ls @openzeppelin/contracts command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In @openzeppelin/contracts, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2023-34234 Affected @openzeppelin/contracts Versions
2 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
@openzeppelin/contracts
|
npm |
≥ 4.3.0
< 4.9.1
|
4.9.1
|
|
@openzeppelin/contracts-upgradeable
|
npm |
≥ 4.3.0
< 4.9.1
|
4.9.1
|
References
Frequently Asked Questions
What is CVE-2023-34234?
Which @openzeppelin/contracts versions are affected?
What version fixes CVE-2023-34234?
Is @openzeppelin/contracts affected?
Is @openzeppelin/contracts-upgradeable affected?
What is the CVSS score of CVE-2023-34234?
What CWE is associated with CVE-2023-34234?
How can I check npm dependencies for CVE-2023-34234?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-5h3x-9wvq-w4m2",
"modified" : "2023-06-08T18:03:11Z",
"published" : "2023-06-08T18:03:11Z",
"aliases" : [ "CVE-2023-34234" ],
"summary" : "OpenZeppelin Contracts's governor proposal creation may be blocked by frontrunning",
"details" : "### Impact\n\nBy frontrunning the creation of a proposal, an attacker can become the proposer and gain the ability to cancel it. The attacker can do this repeatedly to try to prevent a proposal from being proposed at all.\n\nThis impacts the `Governor` contract in v4.9.0 only, and the `GovernorCompatibilityBravo` contract since v4.3.0.\n\n### Patches\n\nThe problem has been patched in 4.9.1 by introducing opt-in frontrunning protection.\n\n### Workarounds\n\nSubmit the proposal creation transaction to an endpoint with frontrunning protection.\n\n### Credit\n\nReported by Lior Abadi and Joaquin Pereyra from Coinspect.\n\n### References\n\nhttps://www.coinspect.com/openzeppelin-governor-dos/",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "@openzeppelin/contracts"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.3.0"
}, {
"fixed" : "4.9.1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "@openzeppelin/contracts-upgradeable"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "4.3.0"
}, {
"fixed" : "4.9.1"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-5h3x-9wvq-w4m2"
}, {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-34234"
}, {
"type" : "WEB",
"url" : "https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commit/66f390fa516b550838e2c2f65132b5bc2afe1ced"
}, {
"type" : "WEB",
"url" : "https://github.com/OpenZeppelin/openzeppelin-contracts/commit/d9474327a492f9f310f31bc53f38dbea56ed9a57"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/OpenZeppelin/openzeppelin-contracts"
}, {
"type" : "WEB",
"url" : "https://github.com/OpenZeppelin/openzeppelin-contracts/releases/tag/v4.9.1"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-862" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2023-06-08T18:03:11Z",
"nvd_published_at" : "2023-06-07T18:15:09Z"
}
}