CVE-2024-34342: react-pdf's PDF.js vulnerable to arbitrary JavaScript execution upon opening a malicious PDF
First published: Tue May 07 2024(Updated: )
### Summary If PDF.js is used to load a malicious PDF, and PDF.js is configured with `isEvalSupported` set to `true` (which is the default value), unrestricted attacker-controlled JavaScript will be executed in the context of the hosting domain. ### Patches [This patch](https://github.com/wojtekmaj/react-pdf/commit/671e6eaa2e373e404040c13cc6b668fe39839cad) forces `isEvalSupported` to `false`, removing the attack vector. ### Workarounds Set `options.isEvalSupported` to `false`, where `options` is `Document` component prop. ### References - [GHSA-wgrm-67xf-hhpq](https://github.com/mozilla/pdf.js/security/advisories/GHSA-wgrm-67xf-hhpq) - https://github.com/mozilla/pdf.js/pull/18015 - https://github.com/mozilla/pdf.js/commit/85e64b5c16c9aaef738f421733c12911a441cec6 - https://bugzilla.mozilla.org/show_bug.cgi?id=1893645
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| npm/react-pdf | >=8.0.0<8.0.2 | 8.0.2 |
| npm/react-pdf | <7.7.3 | 7.7.3 |
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Reference Links
- https://github.com/wojtekmaj/react-pdf/security/advisories/GHSA-87hq-q4gp-9wr4
- https://github.com/mozilla/pdf.js/security/advisories/GHSA-wgrm-67xf-hhpq
- https://github.com/mozilla/pdf.js/pull/18015
- https://github.com/mozilla/pdf.js/commit/85e64b5c16c9aaef738f421733c12911a441cec6
- https://github.com/wojtekmaj/react-pdf/commit/208f28dd47fe38c33ce4bac4205b2b0a0bb207fe
- https://github.com/wojtekmaj/react-pdf/commit/671e6eaa2e373e404040c13cc6b668fe39839cad
- https://nvd.nist.gov/vuln/detail/CVE-2024-34342
- https://github.com/advisories/GHSA-87hq-q4gp-9wr4 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2024-34342?
CVE-2024-34342 is classified as a critical severity vulnerability as it allows unrestricted execution of attacker-controlled JavaScript in the context of the hosting domain.
How do I fix CVE-2024-34342?
To fix CVE-2024-34342, update to react-pdf version 8.0.2 or 7.7.3, ensuring that isEvalSupported is set to false in the PDF.js configuration.
Who is affected by CVE-2024-34342?
CVE-2024-34342 affects applications using PDF.js with isEvalSupported set to true while loading untrusted PDFs.
What versions of react-pdf are vulnerable to CVE-2024-34342?
Versions of react-pdf between 8.0.0 and 8.0.2, as well as any version below 7.7.3, are vulnerable to CVE-2024-34342.
What is the impact of CVE-2024-34342?
The impact of CVE-2024-34342 includes the potential execution of malicious JavaScript, leading to data theft, session hijacking, or other malicious actions within the hosting domain.
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