CVE-2024-49770 oak's path traversal allows transfer of hidden files within the served root directory
Attackers can bypass hidden file restrictions in oak middleware to read sensitive server data via URL-encoded path traversal.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-49770?
CVE-2024-49770 is a high-severity path traversal vulnerability in oakserver oak, published on 1 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
`oak` is a middleware framework for Deno's native HTTP server, Deno Deploy, Node.js 16.5 and later, Cloudflare Workers and Bun. By default `oak` does not allow transferring of hidden files with `Context.send` API. However, prior to version 17.1.3, this can be bypassed by encoding `/` as its URL encoded form `%2F`. For an attacker this has potential to read sensitive user data or to gain access to server secrets. Version 17.1.3 fixes the issue.
Which versions are affected by CVE-2024-49770?
2 open source packages ship an affected version, including @oakserver/oak.
| Package | Affected | Fixed in |
|---|---|---|
@oakserver/oak npm | All versions to 14.1.0 | None |
@oakserver/oak npm | All versions to 14.1.0 | None |
How do I fix CVE-2024-49770?
No fix has been published for CVE-2024-49770 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2024-49770 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-49770 exists.
Sources
Also known as GHSA-qm92-93fv-vh7m.