Vulnerability identifier: #VU7960

Vulnerability risk: Critical

CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-798

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Infinity New Tab (Chrome extension)
Client/Desktop applications / Plugins for browsers, ActiveX components

Vendor: Starlab Tech

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

The vulnerability exists due to presence of backdoor code in Infinity New Tab Google Chrome extension 3.12.3, distributed via Google Web Store.

Mitigation
Update to version 6.0.0 or later.

Vulnerable software versions

Infinity New Tab (Chrome extension): 3.12.3

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External links
http://www.proofpoint.com/us/threat-insight/post/threat-actor-goes-chrome-extension-hijacking-spree
http://pastebin.com/pHf7EHRG
http://infinitynewtab.com/notice.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.