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Arbitrary file read via window-open IPC in Electron

Moderate severity GitHub Reviewed Published Jul 6, 2020 in electron/electron • Updated Jan 9, 2023

Package

npm electron (npm)

Affected versions

>= 8.0.0, < 8.2.4
< 7.2.4

Patched versions

8.2.4
7.2.4

Description

Impact

The vulnerability allows arbitrary local file read by defining unsafe window options on a child window opened via window.open.

Workarounds

Ensure you are calling event.preventDefault() on all new-window events where the url or options is not something you expect.

Fixed Versions

  • 9.0.0-beta.21
  • 8.2.4
  • 7.2.4

For more information

If you have any questions or comments about this advisory:

References

@MarshallOfSound MarshallOfSound published to electron/electron Jul 6, 2020
Reviewed Jul 6, 2020
Published to the GitHub Advisory Database Jul 7, 2020
Last updated Jan 9, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

EPSS score

0.178%
(55th percentile)

Weaknesses

CVE ID

CVE-2020-4075

GHSA ID

GHSA-f9mq-jph6-9mhm

Source code

No known source code
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