CVE-2023-49799 Server-Side Request Forgery in nuxt-api-party
Attackers can bypass URL validation using whitespace to perform Server-Side Request Forgery, potentially leaking credentials or accessing internal services.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-49799?
CVE-2023-49799 is a high-severity server-side request forgery vulnerability in johannschopplich nuxt-api-party, published on 8 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-918
Which versions are affected by CVE-2023-49799?
2 open source packages ship an affected version, including nuxt-api-party. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
nuxt-api-party npm | All versions | 0.22.0 |
nuxt-api-party npm | All versions | 0.22.0 |
Products include Johannschopplich Nuxt Api Party.
How do I fix CVE-2023-49799?
Upgrade nuxt-api-party to 0.22.0 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2023-49799 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-49799 exists.
Other vulnerabilities in johannschopplich nuxt-api-party
Sources
Also known as GHSA-3wfp-253j-5jxv.