Fix DOM Clobbering Gadget found in rollup bundled scripts that leads to XSS #1390
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…to XSS ## Descriptions We discovered a DOM Clobbering vulnerability in rollup when bundling scripts that use `import.meta.url` or with plugins that emit and reference asset files from code in `cjs/umd/iife` format. The DOM Clobbering gadget can lead to cross-site scripting (XSS) in web pages where scriptless attacker-controlled HTML elements (e.g., an img tag with an unsanitized `name` attribute) are present. ### Backgrounds DOM Clobbering is a type of code-reuse attack where the attacker first embeds a piece of non-script, seemingly benign HTML markups in the webpage (e.g. through a post or comment) and leverages the gadgets (pieces of js code) living in the existing javascript code to transform it into executable code. More for information about DOM Clobbering. CWE-79 [CVE-2024-47068](https://nvd.nist.gov/vuln/detail/CVE-2024-47068)
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Thanks for drawing attention to this! I did a quick audit and determined that there’s no vulnerability in Zulip Desktop (if you find otherwise, please don’t hesitate to reach out to security@zulip.com). So we’ll take this rollup update along with all others as part of our normal release process next time. |
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Descriptions
We discovered a DOM Clobbering vulnerability in rollup when bundling scripts that use
import.meta.urlor with plugins that emit and reference asset files from code incjs/umd/iifeformat. The DOM Clobbering gadget can lead to cross-site scripting (XSS) in web pages where scriptless attacker-controlled HTML elements (e.g., an img tag with an unsanitizednameattribute) are present.Backgrounds
DOM Clobbering is a type of code-reuse attack where the attacker first embeds a piece of non-script, seemingly benign HTML markups in the webpage (e.g. through a post or comment) and leverages the gadgets (pieces of js code) living in the existing javascript code to transform it into executable code. More for information about DOM Clobbering.
CWE-79
CVE-2024-47068
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