Information disclosure in MetaMask

1) Information disclosure

EUVDB-ID: #VU64462

Risk: Low

CVSSv3.1: 5.4 [CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32969

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local attacker to gain access to potentially sensitive information.

The vulnerability exists due to the way how web browsers save contents of non-password input fields to the disk as part of their standard “restore session” system. A local attacker can expose a crypto wallet's secret recovery phrase and steal NFTs and cryptocurrency stored within it.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

MetaMask: before 10.11.3

External links

http://medium.com/metamask/security-notice-extension-disk-encryption-issue-d437d4250863

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.