#VU7957 Backdoor in Copyfish (Chrome extension)

Vulnerability identifier: #VU7957

Vulnerability risk: Critical

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red

CVE-ID: N/A

CWE-ID: CWE-798

Exploitation vector: Remote access

Exploit availability: The vulnerability is being exploited in the wild

Vulnerable software:
Copyfish (Chrome extension)

Software vendor:
a9t9 software GmbH

The vulnerability allows a remote attacker to gain unauthorized access to victim's browser.

The vulnerability exists due to presence of backdoor code in Copyfish Google Chrome extension 2.8.5, distributed via Google Web Store.

Update to version 2.8.6 or later.

• https://www.proofpoint.com/us/threat-insight/post/threat-actor-goes-chrome-extension-hijacking-spree