CVE-2024-38354: codimd XSS — Exploit & Fix

Description

CodiMD allows realtime collaborative markdown notes on all platforms. The notebook feature of Hackmd.io permits the rendering of iframe `HTML` tags with an improperly sanitized `name` attribute. This vulnerability enables attackers to perform cross-site scripting (XSS) attacks via DOM clobbering. This vulnerability is fixed in 2.5.4.

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CVSS v3.1 Score

8.1

HIGH

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
hackmd	codimd	< 2.5.4

References

Advisories & Patches

https://github.com/hackmdio/codimd/security/advisories/GHSA-22jv-vch8-2vp9 https://github.com/hackmdio/codimd/security/advisories/GHSA-22jv-vch8-2vp9

Exploits

https://github.com/hackmdio/codimd/security/advisories/GHSA-22jv-vch8-2vp9 https://github.com/hackmdio/codimd/security/advisories/GHSA-22jv-vch8-2vp9

Frequently Asked Questions

What is CVE-2024-38354? +

CodiMD allows realtime collaborative markdown notes on all platforms. The notebook feature of Hackmd.io permits the rendering of iframe `HTML` tags with an improperly sanitized `name` attribute. This vulnerability enables attackers to perform cross-site scripting (XSS) attacks via DOM clobbering. This vulnerability is fixed in 2.5.4. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2024-38354? +

CVE-2024-38354 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-38354? +

CVE-2024-38354 affects products from hackmd, specifically: codimd. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-38354? +

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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