CVE-2021-34435: Exposure of Resource to Wrong Sphere

September 1, 2021 (updated October 27, 2022)

In Eclipse Theia to, the mini-browser extension allows a user to preview HTML files in an iframe inside the IDE. But with the way it is made it is possible for a previewed HTML file to trigger an RCE. This exploit only happens if a user previews a malicious file.

References

bugs.eclipse.org/bugs/show_bug.cgi?id=568018
nvd.nist.gov/vuln/detail/CVE-2021-34435

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