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CVE-2024-34343— Cross-site Scripting (XSS) in navigateTo if used after SSR in nuxt

Quick assessment

Affected
nuxt nuxt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Nuxt是Nuxt开源的一个免费的开源框架。 Nuxt 3.12.4之前版本存在安全漏洞，该漏洞源于无法正确使用提供的API，包含解析差异，容易受到跨站脚本攻击。

CVSS 6.3 · Medium EPSS 0.44% · P37
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I. Basic Information for CVE-2024-34343

Vulnerability Information
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Vulnerability Title
Cross-site Scripting (XSS) in navigateTo if used after SSR in nuxt
Source: CVE Program / CVE List V5
Vulnerability Description
Nuxt is a free and open-source framework to create full-stack web applications and websites with Vue.js. The `navigateTo` function attempts to blockthe `javascript:` protocol, but does not correctly use API's provided by `unjs/ufo`. This library also contains parsing discrepancies. The function first tests to see if the specified URL has a protocol. This uses the unjs/ufo package for URL parsing. This function works effectively, and returns true for a javascript: protocol. After this, the URL is parsed using the parseURL function. This function will refuse to parse poorly formatted URLs. Parsing javascript:alert(1) returns null/"" for all values. Next, the protocol of the URL is then checked using the isScriptProtocol function. This function simply checks the input against a list of protocols, and does not perform any parsing. The combination of refusing to parse poorly formatted URLs, and not performing additional parsing means that script checks fail as no protocol can be found. Even if a protocol was identified, whitespace is not stripped in the parseURL implementation, bypassing the isScriptProtocol checks. Certain special protocols are identified at the top of parseURL. Inserting a newline or tab into this sequence will block the special protocol check, and bypass the latter checks. This ONLY has impact after SSR has occured, the `javascript:` protocol within a location header does not trigger XSS. This issue has been addressed in release version 3.12.4 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Nuxt 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Nuxt是Nuxt开源的一个免费的开源框架。 Nuxt 3.12.4之前版本存在安全漏洞，该漏洞源于无法正确使用提供的API，包含解析差异，容易受到跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nuxt nuxt < 3.12.4 -

II. Public POCs for CVE-2024-34343

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III. Intelligence Information for CVE-2024-34343

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Vendor Advisories for CVE-2024-34343 (1)

Same Patch Batch · nuxt · 2024-08-05 · 4 CVEs total

CVE-2024-23657 8.8 HIGH Path Traversal: '../filedir' in Nuxt Devtools
CVE-2024-34344 8.8 HIGH Remote code execution via the browser when running the test locally in nuxt
CVE-2024-42352 8.6 HIGH Server-Side Request Forgery (SSRF) in nuxt-icon

IV. Related Vulnerabilities

Same product: nuxt
Same vendor: nuxt
Same weakness: CWE-79