{"answers":{"affected":"4 open source packages ship an affected version, including @openzeppelin/contracts. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-39167 in the wild and no public exploit code.","fix":"Upgrade @openzeppelin/contracts to a fixed version for your release line: 3.4.2 or 4.3.1.","what":"CVE-2021-39167 is a critical vulnerability in openzeppelin-contracts, published on 26 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-39167 and fix it if it is affected.\n\nWhat it is: CVE-2021-39167 is a critical vulnerability in openzeppelin-contracts, published on 26 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-39167 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @openzeppelin/contracts (npm): affected from 3.3.0; fixed in 3.4.2\n- @openzeppelin/contracts (npm): affected from 3.3.0; fixed in 3.4.2\n- @openzeppelin/contracts (npm): affected from 4.0.0; fixed in 4.3.1\n- @openzeppelin/contracts (npm): affected from 4.0.0; fixed in 4.3.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2021-39167/ (Markdown: https://insights.sbomify.com/CVE-2021-39167/index.md)","id":"CVE-2021-39167","markdown":"https://insights.sbomify.com/CVE-2021-39167/index.md","name":"CVE-2021-39167","record":{"aliases":["GHSA-fg47-3c2x-m2wr"],"analysis":{"component_type":"library","fix_type":"workaround","impacts":["privilege_escalation"],"network_reachable":"yes","non_default_config":false,"product_category":"Smart contract library","requires_auth":"none","summary":"An actor with the executor role in OpenZeppelin TimelockController can escalate privileges, requiring revocation of untrusted executor roles.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"contracts","vendor":"openzeppelin"}],"cvss":{"score":10,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-269","name":"Improper Privilege Management"}],"description":"OpenZepplin is a library for smart contract development. In affected versions a vulnerability in TimelockController allowed an actor with the executor role to escalate privileges. Further details about the vulnerability will be disclosed at a later date. As a workaround revoke the executor role from accounts not strictly under the team's control. We recommend revoking all executors that are not also proposers. When applying this mitigation, ensure there is at least one proposer and executor remaining.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"TimelockController vulnerability in OpenZeppelin Contracts","id":"CVE-2021-39167","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"privilege_escalation","year":"2021"},"n_packages":4,"n_references":3,"next":{"headline":"TimelockController vulnerability in OpenZeppelin Contracts","id":"CVE-2021-39168"},"packages":[{"ecosystem":"npm","fixed":["3.4.2"],"introduced":["3.3.0"],"last_affected":[],"package":"@openzeppelin/contracts","purl":null,"source":"GHSA-fg47-3c2x-m2wr"},{"ecosystem":"npm","fixed":["3.4.2"],"introduced":["3.3.0"],"last_affected":[],"package":"@openzeppelin/contracts","purl":"pkg:npm/%40openzeppelin/contracts","source":"GHSA-fg47-3c2x-m2wr"},{"ecosystem":"npm","fixed":["4.3.1"],"introduced":["4.0.0"],"last_affected":[],"package":"@openzeppelin/contracts","purl":null,"source":"GHSA-fg47-3c2x-m2wr"},{"ecosystem":"npm","fixed":["4.3.1"],"introduced":["4.0.0"],"last_affected":[],"package":"@openzeppelin/contracts","purl":"pkg:npm/%40openzeppelin/contracts","source":"GHSA-fg47-3c2x-m2wr"}],"prev":{"headline":"Improper Neutralization of Text-Values in Object Version Preview","id":"CVE-2021-39166"},"products":["openzeppelin-contracts"],"published":"2021-08-26","related":[{"cvss_score":10,"headline":"TimelockController vulnerability in OpenZeppelin Contracts","id":"CVE-2021-39168","kev_date_added":null,"published":"2021-08-26"},{"cvss_score":9.8,"headline":"UUPSUpgradeable vulnerability in OpenZeppelin Contracts","id":"CVE-2021-41264","kev_date_added":null,"published":"2021-11-12"},{"cvss_score":7.9,"headline":"ECDSA signature malleability in OpenZeppelin Contracts","id":"CVE-2022-35961","kev_date_added":null,"published":"2022-08-14"},{"cvss_score":7.5,"headline":"GovernorVotesQuorumFraction updates to quorum may affect past defeated proposals in @openzeppelin/contracts","id":"CVE-2022-31198","kev_date_added":null,"published":"2022-08-01"},{"cvss_score":7.5,"headline":"OpenZeppelin Contracts's ERC165Checker may revert instead of returning false","id":"CVE-2022-31170","kev_date_added":null,"published":"2022-07-21"},{"cvss_score":7.5,"headline":"OpenZeppelin Contracts's SignatureChecker may revert on invalid EIP-1271 signers","id":"CVE-2022-31172","kev_date_added":null,"published":"2022-07-21"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["OpenZeppelin"]},"summary":"An actor with the executor role in OpenZeppelin TimelockController can escalate privileges, requiring revocation of untrusted executor roles.","url":"https://insights.sbomify.com/CVE-2021-39167/"}