CVE-2024-28243: katex — Fix

Description

KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions could encounter malicious input using `\edef` that causes a near-infinite loop, despite setting `maxExpand` to avoid such loops. This can be used as an availability attack, where e.g. a client rendering another user's KaTeX input will be unable to use the site due to memory overflow, tying up the main thread, or stack overflow. Upgrade to KaTeX v0.16.10 to remove this vulnerability.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-674 CWE-674

Affected Products

Vendor	Product	Versions
katex	katex	0.1.0 — 0.16.10

References

Advisories & Patches

https://github.com/KaTeX/KaTeX/commit/e88b4c357f978b1bca8edfe3297f0aa309bcbe34 https://github.com/KaTeX/KaTeX/security/advisories/GHSA-64fm-8hw2-v72w https://github.com/KaTeX/KaTeX/commit/e88b4c357f978b1bca8edfe3297f0aa309bcbe34 https://github.com/KaTeX/KaTeX/security/advisories/GHSA-64fm-8hw2-v72w

Other References

https://github.com/github/advisory-database/pull/6777

Frequently Asked Questions

What is CVE-2024-28243? +

KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions could encounter malicious input using `\edef` that causes a near-infinite loop, despite setting `maxExpand` to avoid such loops. This can be used as an availability attack, where e.g. a client rendering another user's KaTeX input will be unable to use the site due to memory overflow, tying up the main thread, or stack overflow. Upgrade to KaTeX v0.16.10 to remove this vulnerability. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-28243? +

CVE-2024-28243 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-28243? +

CVE-2024-28243 affects products from katex, specifically: katex. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-28243? +

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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