Electron up to 7.2.3/8.2.3/9.0.0-beta20 Isolation trust boundary violation

EntryHistoryDiffjsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9	$0-$5k	0.00

A vulnerability was found in Electron up to 7.2.3/8.2.3/9.0.0-beta20. It has been rated as critical. Affected by this issue is some unknown processing of the component Isolation Handler. The manipulation with an unknown input leads to a trust boundary violation vulnerability. Using CWE to declare the problem leads to CWE-501. The product mixes trusted and untrusted data in the same data structure or structured message. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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 contextIsolation are affected. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.

The weakness was presented 07/07/2020 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2020-4076 since 12/30/2019. The exploitation is known to be difficult. The attack needs to be approached locally. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

Upgrading to version 7.2.4, 8.2.4 or 9.0.0-beta21 eliminates this vulnerability.

See 157689 and 157687 for similar entries.

Productinfo

Name

Electron

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.6
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Trust boundary violation
CWE: CWE-501
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Electron 7.2.4/8.2.4/9.0.0-beta21

Timelineinfo

12/30/2019 🔍
07/07/2020 +190 days 🔍
07/07/2020 +0 days 🔍
10/28/2020 +113 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-4076 (🔍)
See also: 🔍

Entryinfo

Created: 07/07/2020 09:50
Updated: 10/28/2020 22:04
Changes: 07/07/2020 09:50 (39), 07/07/2020 09:55 (11), 10/28/2020 21:55 (1), 10/28/2020 22:04 (1)
Complete: 🔍