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GitHub_MCVELIST:CVE-2020-4077

HistoryJul 07, 2020 - 12:05 a.m.

CVE-2020-4077 Context isolation bypass via contextBridge in Electron

2020-07-0700:05:16

CWE-501

GitHub_M

www.cve.org

CVSS3

7.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

9.3

Confidence

High

EPSS

0.001

Percentile

42.8%

JSON

In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, there is a context isolation bypass. Code running in the main world context in the renderer can reach into the isolated Electron context and perform privileged actions. Apps using both contextIsolation and contextBridge are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

CNA Affected

[
  {
    "product": "electron",
    "vendor": "electron",
    "versions": [
      {
        "status": "affected",
        "version": ">= 9.0.0-beta.0, <= 9.0.0-beta.20"
      },
      {
        "status": "affected",
        "version": ">= 8.0.0, < 8.2.4"
      },
      {
        "status": "affected",
        "version": "< 7.2.4"
      }
    ]
  }
]

References

github.com/electron/electron/security/advisories/GHSA-h9jc-284h-533g

www.electronjs.org/releases/stable?page=3#release-notes-for-v824

CVSS3

7.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

9.3

Confidence

High

EPSS

0.001

Percentile

42.8%

JSON

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