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Vulnerability DatabaseCVE-2020-18748

CVE-2020-18748: 
NixOS vulnerability analysis and mitigation

Overview

Cross Site Scripting (XSS) vulnerability in Typora v0.9.65 allows attackers to execute arbitrary code via mathjax syntax due to a mathjax configuration error in the mathematical formula blocks. This vulnerability is tracked as CVE-2020-18748 and is distinct from CVE-2020-18221 (NVD, CVE).

Technical details

The vulnerability has a CVSS v3.1 Base Score of 6.1 (MEDIUM) with vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. The issue exists in the mathematical formula blocks where mathjax syntax can be manipulated to execute arbitrary code through XSS. The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation) (NVD).

Impact

When successfully exploited, this vulnerability allows attackers to execute arbitrary code through the mathematical formula blocks in Typora. The impact is rated as low for both confidentiality and integrity, with no impact on availability (NVD).

Exploitability

The vulnerability requires user interaction to be exploited, as demonstrated in the proof of concept where clicking on specially crafted mathjax content can trigger code execution (Typora Issues).

Mitigation and workarounds

Users should upgrade from Typora v0.9.65 to a newer version that contains fixes for this vulnerability (NVD).

Additional resources

Source: This report was generated using AI

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