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Mnemonic phrase may be accessed by Javascript through a private API

High
C0x41lch0x41 published GHSA-vqr6-hwg2-775w Aug 23, 2023

Package

Freighter (Chrome extension)

Affected versions

< 5.3.1

Patched versions

5.3.1

Description

Impact

This vulnerability impacts access control to the mnemonic recovery phrase. It may be possible in some cases for a malicious website to access the recovery mnemonic phrase when the Freighter wallet is unlocked.
There is no evidence this security issue was exploited in the wild.

Patches

Freighter wallet 5.3.1 no longer allows Javascript to access the mnemonic phrase through the private API. The extension automatically updates when a new version is published. Every Freighter wallet should be up-to-date with the security patch.
Reminder that users should never install the application outside of the official extension stores.

References

Pull Request: #948

Severity

High

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
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
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:L/PR:N/UI:R/S:U/C:H/I:H/A:N

CVE ID

CVE-2023-40580

Weaknesses

No CWEs