{"id":"CVE-2024-38537","state":"PUBLISHED","title":"Inclusion of Untrusted polyfill.io Code Vulnerability in fides.js","description":"Fides is an open-source privacy engineering platform. `fides.js`, a client-side script used to interact with the consent management features of Fides, used the `polyfill.io` domain in a very limited edge case, when it detected a legacy browser such as IE11 that did not support the fetch standard. Therefore it was possible for users of legacy, pre-2017 browsers who navigate to a page serving `fides.js` to download and execute malicious scripts from the `polyfill.io` domain when the domain was compromised and serving malware. No exploitation of `fides.js` via `polyfill.io` has been identified as of time of publication.\n\nThe vulnerability has been patched in Fides version `2.39.1`. Users are advised to upgrade to this version or later to secure their systems against this threat. On Thursday, June 27, 2024, Cloudflare and Namecheap intervened at a domain level to ensure `polyfill.io` and its subdomains could not resolve to the compromised service, rendering this vulnerability unexploitable. Prior to the domain level intervention, there were no server-side workarounds and the confidentiality, integrity, and availability impacts of this vulnerability were high. Clients could ensure they were not affected by using a modern browser that supported the fetch standard.","publishedAt":"2024-07-02T19:50:10.275Z","updatedAt":"2024-08-02T04:12:24.976Z","severity":{"score":0,"label":"None","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["ethyca fides"],"affected":[{"vendor":"ethyca","product":"fides","versions":[{"version":"< 2.39.1","status":"affected"}]}],"references":["https://github.com/ethyca/fides/security/advisories/GHSA-cvw4-c69g-7v7m","https://github.com/ethyca/fides/pull/5026","https://github.com/ethyca/fides/commit/868c4d629760572192bd61db34f5a4458ed12005","https://fetch.spec.whatwg.org","https://sansec.io/research/polyfill-supply-chain-attack"],"weaknesses":["CWE-829"],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/38xxx/CVE-2024-38537.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-38537","state":"PUBLISHED","datePublished":"2024-07-02T19:50:10.275Z","dateUpdated":"2024-08-02T04:12:24.976Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2024-06-18T16:37:02.729Z"},"containers":{"cna":{"title":"Inclusion of Untrusted polyfill.io Code Vulnerability in fides.js","descriptions":[{"lang":"en","value":"Fides is an open-source privacy engineering platform. `fides.js`, a client-side script used to interact with the consent management features of Fides, used the `polyfill.io` domain in a very limited edge case, when it detected a legacy browser such as IE11 that did not support the fetch standard. Therefore it was possible for users of legacy, pre-2017 browsers who navigate to a page serving `fides.js` to download and execute malicious scripts from the `polyfill.io` domain when the domain was compromised and serving malware. No exploitation of `fides.js` via `polyfill.io` has been identified as of time of publication.\n\nThe vulnerability has been patched in Fides version `2.39.1`. Users are advised to upgrade to this version or later to secure their systems against this threat. On Thursday, June 27, 2024, Cloudflare and Namecheap intervened at a domain level to ensure `polyfill.io` and its subdomains could not resolve to the compromised service, rendering this vulnerability unexploitable. Prior to the domain level intervention, there were no server-side workarounds and the confidentiality, integrity, and availability impacts of this vulnerability were high. Clients could ensure they were not affected by using a modern browser that supported the fetch standard."}],"affected":[{"vendor":"ethyca","product":"fides","versions":[{"version":"< 2.39.1","status":"affected"}]}],"references":[{"url":"https://github.com/ethyca/fides/security/advisories/GHSA-cvw4-c69g-7v7m","name":"https://github.com/ethyca/fides/security/advisories/GHSA-cvw4-c69g-7v7m","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/ethyca/fides/pull/5026","name":"https://github.com/ethyca/fides/pull/5026","tags":["x_refsource_MISC"]},{"url":"https://github.com/ethyca/fides/commit/868c4d629760572192bd61db34f5a4458ed12005","name":"https://github.com/ethyca/fides/commit/868c4d629760572192bd61db34f5a4458ed12005","tags":["x_refsource_MISC"]},{"url":"https://fetch.spec.whatwg.org","name":"https://fetch.spec.whatwg.org","tags":["x_refsource_MISC"]},{"url":"https://sansec.io/research/polyfill-supply-chain-attack","name":"https://sansec.io/research/polyfill-supply-chain-attack","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":0,"baseSeverity":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-829","lang":"en","description":"CWE-829: Inclusion of Functionality from Untrusted Control Sphere","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2024-07-02T19:50:10.275Z"},"source":{"advisory":"GHSA-cvw4-c69g-7v7m","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2024-07-02T20:11:37.728266Z","id":"CVE-2024-38537","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2024-07-02T20:11:44.703Z"}},{"title":"CVE Program Container","references":[{"url":"https://github.com/ethyca/fides/security/advisories/GHSA-cvw4-c69g-7v7m","name":"https://github.com/ethyca/fides/security/advisories/GHSA-cvw4-c69g-7v7m","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://github.com/ethyca/fides/pull/5026","name":"https://github.com/ethyca/fides/pull/5026","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://github.com/ethyca/fides/commit/868c4d629760572192bd61db34f5a4458ed12005","name":"https://github.com/ethyca/fides/commit/868c4d629760572192bd61db34f5a4458ed12005","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://fetch.spec.whatwg.org","name":"https://fetch.spec.whatwg.org","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://sansec.io/research/polyfill-supply-chain-attack","name":"https://sansec.io/research/polyfill-supply-chain-attack","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T04:12:24.976Z"}}]}}}