Vulnerability Description
`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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Johannschopplich | Nuxt Api Party | <= 0.21.3 |
Related Weaknesses (CWE)
References
- https://fetch.spec.whatwg.org/Not Applicable
- https://fetch.spec.whatwg.org/#http-whitespace-byteNot Applicable
- https://github.com/johannschopplich/nuxt-api-party/blob/777462e1e3af1d9f8938aa33Issue Tracking
- https://github.com/johannschopplich/nuxt-api-party/security/advisories/GHSA-3wfpExploitMitigationVendor Advisory
- https://infra.spec.whatwg.org/#byte-sequenceNot Applicable
- https://fetch.spec.whatwg.org/Not Applicable
- https://fetch.spec.whatwg.org/#http-whitespace-byteNot Applicable
- https://github.com/johannschopplich/nuxt-api-party/blob/777462e1e3af1d9f8938aa33Issue Tracking
- https://github.com/johannschopplich/nuxt-api-party/security/advisories/GHSA-3wfpExploitMitigationVendor Advisory
- https://infra.spec.whatwg.org/#byte-sequenceNot Applicable
FAQ
What is CVE-2023-49799?
CVE-2023-49799 is a vulnerability with a CVSS score of 7.5 (HIGH). `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 ch...
How severe is CVE-2023-49799?
CVE-2023-49799 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-49799?
Check the references section above for vendor advisories and patch information. Affected products include: Johannschopplich Nuxt Api Party.