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EclipseCVE-2021-34435

HistorySep 01, 2021 - 6:15 p.m.

CVE-2021-34435

2021-09-0118:15:09

CWE-942

CWE-346

eclipse

web.nvd.nist.gov

eclipse theia

rce

mini-browser

html

iframe

exploit

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

8.5

Confidence

High

EPSS

0.003

Percentile

68.0%

JSON

In Eclipse Theia 0.3.9 to 1.8.1, 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…

Affected configurations

Nvd

Node

eclipsetheiaRange0.3.9–1.8.1

VendorProductVersionCPE
eclipsetheia*cpe:2.3:a:eclipse:theia:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
eclipse	theia	*	cpe:2.3:a:eclipse:theia::::::::

CNA Affected

[
  {
    "product": "Eclipse Theia",
    "vendor": "The Eclipse Foundation",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "0.3.9",
        "versionType": "custom"
      },
      {
        "lessThanOrEqual": "1.8.1",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

bugs.eclipse.org/bugs/show_bug.cgi?id=568018

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

8.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

8.5

Confidence

High

EPSS

0.003

Percentile

68.0%

JSON

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