Bug 2271599 (CVE-2024-28244)

Summary: CVE-2024-28244 katex: causes a near-infinite loop
Product: [Other] Security Response Reporter: Rohit Keshri <rkeshri>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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Bug Depends On: 2271600, 2271601    
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Description Rohit Keshri 2024-03-26 14:00:25 UTC 
KaTeX is a JavaScript library for TeX math rendering on the web. KaTeX users who render untrusted mathematical expressions could encounter malicious input using `\def` or `\newcommand` that causes a near-infinite loop, despite setting `maxExpand` to avoid such loops. KaTeX supports an option named maxExpand which aims to prevent infinitely recursive macros from consuming all available memory and/or triggering a stack overflow error. Unfortunately, support for "Unicode (sub|super)script characters" allows an attacker to bypass this limit. Each sub/superscript group instantiated a separate Parser with its own limit on macro executions, without inheriting the current count of macro executions from its parent. This has been corrected in KaTeX v0.16.10.

https://github.com/KaTeX/KaTeX/commit/085e21b5da05414efefa932570e7201a7c70e5b2
https://github.com/KaTeX/KaTeX/security/advisories/GHSA-cvr6-37gx-v8wc
Comment 1 Rohit Keshri 2024-03-26 14:00:56 UTC 
Created h3 tracking bugs for this issue:

Affects: fedora-all [bug 2271600]


Created marker tracking bugs for this issue:

Affects: fedora-all [bug 2271601]