CVE-2024-21549 Browsershot Improper Input Validation vulnerability
An attacker can read arbitrary local files by bypassing URL validation in the setUrl method of the spatie/browsershot library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-21549?
CVE-2024-21549 is a high-severity path traversal vulnerability in spatie/browsershot, published on 20 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Versions of the package spatie/browsershot before 5.0.3 are vulnerable to Improper Input Validation due to improper URL validation in the setUrl method. An attacker can exploit this vulnerability by utilizing view-source:file://, which allows for arbitrary file reading on a local file. **Note:** This is a bypass of the fix for [CVE-2024-21544](https://security.snyk.io/vuln/SNYK-PHP-SPATIEBROWSERSHOT-8496745).
Weakness: CWE-20
Which versions are affected by CVE-2024-21549?
2 open source packages ship an affected version, including spatie/browsershot.
| Package | Affected | Fixed in |
|---|---|---|
spatie/browsershot Packagist | All versions | 5.0.3 |
spatie/browsershot Packagist | All versions | 5.0.3 |
How do I fix CVE-2024-21549?
Upgrade spatie/browsershot to 5.0.3 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2024-21549 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-21549 exists.
Sources
Also known as GHSA-c9f5-29f6-c35w.