CVE-2024-32472: XSS (CVSS 6.1)

Description

excalidraw is an open source virtual hand-drawn style whiteboard. A stored XSS vulnerability in Excalidraw's web embeddable component. This allows arbitrary JavaScript to be run in the context of the domain where the editor is hosted. There were two vectors. One rendering untrusted string as iframe's `srcdoc` without properly sanitizing against HTML injection. Second by improperly sanitizing against attribute HTML injection. This in conjunction with allowing `allow-same-origin` sandbox flag (necessary for several embeds) resulted in the XSS. This vulnerability is fixed in 0.17.6 and 0.16.4.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

CWE-80 CWE-80

References

Other References

https://github.com/excalidraw/excalidraw/commit/6be752e1b6d776ccfbd3bb9eea17463cb264121d https://github.com/excalidraw/excalidraw/commit/988f81911ca58e3ca2583e0dd44a954dd00e09d0 https://github.com/excalidraw/excalidraw/security/advisories/GHSA-m64q-4jqh-f72f https://github.com/excalidraw/excalidraw/commit/6be752e1b6d776ccfbd3bb9eea17463cb264121d https://github.com/excalidraw/excalidraw/commit/988f81911ca58e3ca2583e0dd44a954dd00e09d0 https://github.com/excalidraw/excalidraw/security/advisories/GHSA-m64q-4jqh-f72f

Frequently Asked Questions

What is CVE-2024-32472? +

excalidraw is an open source virtual hand-drawn style whiteboard. A stored XSS vulnerability in Excalidraw's web embeddable component. This allows arbitrary JavaScript to be run in the context of the domain where the editor is hosted. There were two vectors. One rendering untrusted string as iframe's `srcdoc` without properly sanitizing against HTML injection. Second by improperly sanitizing against attribute HTML injection. This in conjunction with allowing `allow-same-origin` sandbox flag (necessary for several embeds) resulted in the XSS. This vulnerability is fixed in 0.17.6 and 0.16.4. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2024-32472? +

CVE-2024-32472 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2024-32472? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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