September 10, 2018Swati Khandelwal
Zerodium, the infamous exploit vendor that earlier this year offered $1 million for submitting a zero-day exploit for Tor Browser,
today publicly revealed a critical zero-day flaw in the anonymous
browsing software that could reveal your identity to the sites you
In a Tweet, Zerodium shared a zero-day vulnerability that resides in the NoScript browser plugin comes pre-installed with the Mozilla Firefox bundled in the Tor software.
According to Zerodium, NoScript “Classic” versions 5.0.4 to
188.8.131.52–with ‘Safest’ security level enabled–included in Tor Browser
content-type header to JSON format.
It should be noted that the latest version of Tor browser, i.e., Tor 8.0, is not vulnerable to this flaw, as the NoScript plugin designed for the newer version of Firefox (“Quantum”) is based upon a different API format.
Therefore, Tor 7.x users are highly recommended to immediately update their browser to the latest Tor 8.0 release.
NoScript has also fixed the zero-day flaw with the release of NoScript “Classic” version 184.108.40.206.