Browsershot 3.57.3 - Server Side XSS to LFR via HTML
Summary
| Name | Browsershot 3.57.3 - Server Side XSS to LFR via HTML |
| Code name | |
| Product | Browsershot |
| Affected versions | Version 3.57.3 |
| State | Public |
| Release date | 2022-11-21 |
Vulnerability
| Kind | Server Side XSS |
| Rule | |
| Remote | Yes |
| CVSSv3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CVSSv3.1 Base Score | 7.5 |
| Exploit available | Yes |
| CVE ID(s) |
Description
Browsershot version 3.57.3 allows an external attacker to remotely obtain arbitrary local files. This is possible because the application does not validate that the JS content imported from an external source passed to the Browsershot::html method does not contain URLs that use the file:// protocol.
Vulnerability
This vulnerability occurs because the application does not validate that the JS content imported from an external source passed to the Browsershot::html method does not contain URLs that use the file:// protocol.
Evidence of exploitation
Our security policy
We have reserved the CVE-2022-43984 to refer to these issues from now on.
System Information
-
Version: Browsershot 3.57.3
-
Operating System: GNU/Linux
Mitigation
An updated version of Browsershot is available at the vendor page.
Credits
The vulnerability was discovered by Carlos Bello from Fluid Attacks' Offensive Team.
References
Vendor page https://github.com/spatie/browsershot
Timeline
2022-10-25
Vulnerability discovered.
2022-10-25
Vendor contacted.
2022-10-25
Vendor replied acknowledging the report.
2022-10-25
Vendor Confirmed the vulnerability.
2022-11-21
Public Disclosure.
