ethyca fides up to 2.39.0 polyfill.io fides.js inclusion of functionality from untrusted control sphere

Summaryinfo

A vulnerability was found in ethyca fides up to 2.39.0. It has been rated as problematic. This issue affects some unknown processing of the file fides.js of the component polyfill.io Handler. The manipulation leads to inclusion of functionality from untrusted control sphere. This vulnerability is listed as CVE-2024-38537. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in ethyca fides up to 2.39.0. This issue affects an unknown function of the file fides.js of the component polyfill.io Handler. The manipulation with an unknown input leads to a inclusion of functionality from untrusted control sphere vulnerability. Using CWE to declare the problem leads to CWE-829. The product imports, requires, or includes executable functionality (such as a library) from a source that is outside of the intended control sphere. Impacted is integrity. The summary by CVE is:

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. The 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.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2024-38537 since 06/18/2024. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 2.39.1 eliminates this vulnerability. Applying the patch 868c4d629760572192bd61db34f5a4458ed12005 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• ethyca

Name

• fides

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38
• 2.39.0

License

• open-source

Website

• Product: https://github.com/ethyca/fides/

CPE 2.3info

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CPE 2.2info

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