Vue 2 vue-template-compiler XSS Vulnerability Analysis (CVE-2024-6783)

From this webpage screenshot, the following key information about the vulnerability can be obtained: 1. Vulnerability ID: CVE-2024-6783 2. Vulnerability Type: Cross-Site Scripting (XSS) 3. Affected Library: vue-template-compiler 4. Affected Version Range: >= 2.0.0 = 2.0.0 and < 3.0.0. - It resides in Vue’s in-browser template compiler, which is responsible for converting string code into executable code to parse component templates into render functions. - These render functions are executed within stringified statements during Vue execution, allowing third-party scripts to execute arbitrary code. 8. Exploitation: - Only specific properties are vulnerable to client-side XSS when extending . - One such property is , which is retrieved in template strings when using the attribute with non-dynamic classes. - Optimization measures depend on the entire template string and may or may not trigger this code path. 9. Reproduction Steps: - The in-browser Vue template compiler using the AST Codegen path relies on initially unset properties. - If these properties are explicitly set to or checked via , prototype pollution cannot occur. - Currently, nearly every property in ASTElement (the main data structure used to create codegen nodes for SSR, in-browser compilation, and Vue SFC file parsing) is optional and potentially vulnerable to this XSS flaw. 10. Mitigation Measures: - Vue 2 has reached end-of-life. Users of affected components should take the following mitigations: - Migrate to a newer version of Vue. - Apply their own patches. - Leverage commercial support partners such as HeroDevs, which offers post-EOL security support. 11. Contact Information: - HeroDevs contact details: - Phone: +1 877-586-1965 - Email: hello@herodevs.com - Address: 8850 S 700 E #2437 Sandy, UT 84070 This information provides a detailed description of the CVE-2024-6783 vulnerability, including its scope of impact, exploitation methods, and mitigation strategies.

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Vue 2 vue-template-compiler XSS Vulnerability Analysis (CVE-2024-6783)