Vulnerability Details : CVE-2018-16983
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.
Products affected by CVE-2018-16983
- cpe:2.3:a:torproject:tor_browser:*:*:*:*:*:*:*:*
- cpe:2.3:a:noscript:noscript:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-16983
0.42%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-16983
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
References for CVE-2018-16983
-
https://twitter.com/Zerodium/status/1039127214602641409
Zerodium on Twitter: "Advisory: Tor Browser 7.x has a serious vuln/bugdoor leading to full bypass of Tor / NoScript 'Safest' security level (supposed to block all JS). PoC: Set the Content-Type of youThird Party Advisory
-
https://www.zdnet.com/article/exploit-vendor-drops-tor-browser-zero-day-on-twitter/
Exploit vendor drops Tor Browser zero-day on Twitter | ZDNetThird Party Advisory
-
https://noscript.net/getit#classic
NoScript - JavaScript/Java/Flash blocker for a safer Firefox experience! - get it! - InformActionRelease Notes
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