Remote Code Execution and XML Parsing Vulnerability in Eclipse Theia
CVE-2021-34436

9.8CRITICAL

Key Information:

Vendor

The Eclipse Foundation

Status
Eclipse Theia
Vendor
CVE Published:
2 September 2021

What is CVE-2021-34436?

Eclipse Theia versions 0.1.1 to 0.2.0 are susceptible to a severe security vulnerability that allows attackers to exploit the default build and execute arbitrary code remotely. This issue arises from the theia-xml-extension, which utilizes lsp4xml (now known as LemMinX) for XML language support. The extension is installed by default, making it a significant risk unless addressed.

Affected Version(s)

Eclipse Theia 0.1.1

Eclipse Theia 0.1.2

Eclipse Theia 0.2.0-next.28bc2735

References

https://bugs.eclipse.org/bugs/show_bug.cgi?id=563174
x_refsource_CONFIRM

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.