CVE-2024-47885

14.10.2024, 19:15

The Astro web framework has a DOM Clobbering gadget in the client-side router starting in version 3.0.0 and prior to version 4.16.1. It can lead to cross-site scripting (XSS) in websites enables Astro's client-side routing and has *stored* attacker-controlled scriptless HTML elements (i.e., `iframe` tags with unsanitized `name` attributes) on the destination pages. This vulnerability can result in cross-site scripting (XSS) attacks on websites that built with Astro that enable the client-side routing with `ViewTransitions` and store the user-inserted scriptless HTML tags without properly sanitizing the `name` attributes on the page. Version 4.16.1 contains a patch for this issue.

Cross-site Scripting

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	5.9 MEDIUM	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:H
GitHub_M	CNA	5.9 MEDIUM	NETWORK	HIGH	LOW	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:H
CISA-ADP	ADP	---				---

Awaiting analysis

This vulnerability is currently awaiting analysis.

Base Score

CVSS 3.x

EPSS Score

Percentile: 3%

Common Weakness Enumeration

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References

https://github.com/withastro/astro/blob/7814a6cad15f06931f963580176d9b38aa7819f2/packages/astro/src/transitions/router.ts#L135-L156

https://github.com/withastro/astro/commit/a4ffbfaa5cb460c12bd486fd75e36147f51d3e5e

https://github.com/withastro/astro/security/advisories/GHSA-m85w-3h95-hcf9