CVE-2021-34436: Path Traversal
First published: Thu Sep 02 2021(Updated: )
In Eclipse Theia 0.1.1 to 0.2.0, it is possible to exploit the default build to obtain remote code execution (and XXE) via the theia-xml-extension. This extension uses lsp4xml (recently renamed to LemMinX) in order to provide language support for XML. This is installed by default.
Credit: emo@eclipse.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Eclipse Theia | >=0.1.1<=0.2.0 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-34436?
CVE-2021-34436 is a vulnerability in Eclipse Theia 0.1.1 to 0.2.0 that allows an attacker to exploit the default build and obtain remote code execution and XXE (XML External Entity) through the theia-xml-extension.
How can this vulnerability be exploited?
This vulnerability can be exploited by leveraging the default build in Eclipse Theia 0.1.1 to 0.2.0 via the theia-xml-extension, which uses lsp4xml (LemMinX) to provide XML language support.
What is the severity of CVE-2021-34436?
CVE-2021-34436 has a severity rating of critical with a CVSS score of 9.8.
What software versions are affected by CVE-2021-34436?
Eclipse Theia versions 0.1.1 to 0.2.0 are affected by CVE-2021-34436.
How can I fix CVE-2021-34436?
To fix this vulnerability, it is recommended to upgrade Eclipse Theia to a version beyond 0.2.0.
- collector/nvd-index
- agent/references
- agent/severity
- agent/author
- agent/weakness
- agent/tags
- agent/last-modified-date
- agent/softwarecombine
- agent/first-publish-date
- agent/event
- agent/type
- agent/description
- collector/mitre-cve
- source/MITRE
- vendor/eclipse
- canonical/eclipse theia
- version/eclipse theia/0.1.1
- version/eclipse theia/0.2.0