#VU36701 Input validation error in NoScript - CVE-2018-16983

Vulnerability identifier: #VU36701

Vulnerability risk: High

CVSSv4.0: 8.1 [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:U/U:Amber]

CVE-ID: CVE-2018-16983

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
NoScript
Client/Desktop applications / Plugins for browsers, ActiveX components

Vendor: InformAction

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

NoScript Classic before 5.1.8.7, as used in Tor Browser 7.x and other products, allows attackers to bypass script blocking via the text/html;/json Content-Type value.

Mitigation
Install update from vendor's website.

Vulnerable software versions

NoScript: 5.1.8.1 - 5.1.8.6

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External links
https://noscript.net/getit#classic
https://twitter.com/Zerodium/status/1039127214602641409
https://www.zdnet.com/article/exploit-vendor-drops-tor-browser-zero-day-on-twitter/

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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?

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