`nuxt-api-party` is an open source module to proxy API requests. nuxt-api-party attempts to check if the user has passed an absolute URL to prevent the aforementioned attack. This has been recently changed to use the regular expression `^https?://`, however this regular expression can be bypassed by an absolute URL with leading whitespace. For example `\nhttps://whatever.com` which has a leading newline. According to the fetch specification, before a fetch is made the URL is normalized. "To normalize a byte sequence potentialValue, remove any leading and trailing HTTP whitespace bytes from potentialValue.". This means the final request will be normalized to `https://whatever.com` bypassing the check and nuxt-api-party will send a request outside of the whitelist. This could allow us to leak credentials or perform Server-Side Request Forgery (SSRF). This vulnerability has been addressed in version 0.22.1. Users are advised to upgrade. Users unable to upgrade should revert to the previous method of detecting absolute URLs.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-12-08T23:45:18.581Z

Updated: 2024-08-02T22:01:25.998Z

Reserved: 2023-11-30T13:39:50.864Z

Link: CVE-2023-49799

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-12-09T00:15:07.393

Modified: 2023-12-13T17:25:57.097

Link: CVE-2023-49799

cve-icon Redhat

No data.