Vulnerability Name:

CVE-2021-34435 (CCN-208681)

Assigned:2021-09-01
Published:2021-09-01
Updated:2022-10-27
Summary: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..
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
9.8 Critical (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
10.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-346
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-34435

Source: CCN
Type: Bugzilla - Bug 568018
(CVE-2021-34435) - Theia "mini-browser" extension RCE exploit

Source: CONFIRM
Type: Exploit, Patch, Vendor Advisory
https://bugs.eclipse.org/bugs/show_bug.cgi?id=568018

Source: XF
Type: UNKNOWN
eclipse-cve202134435-code-exec(208681)

Source: CCN
Type: SNYK-JS-THEIAMINIBROWSER-1582379
@theia/mini-browser

Source: CCN
Type: Theia Web site
Eclipse Theia

Vulnerable Configuration:Configuration 1:
  • cpe:/a:eclipse:theia:*:*:*:*:*:*:*:* (Version >= 0.3.9 and <= 1.8.1)

    • Configuration CCN 1:
  • cpe:/a:eclipse:theia:0.3.9:*:*:*:*:*:*:*
  • OR cpe:/a:eclipse:theia:1.8.1:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    eclipse theia *
    eclipse theia 0.3.9
    eclipse theia 1.8.1