CVE-2019-12383 Information disclosure in n/a

Medium 4.3 Published 28 May 2019 Updated 4 Aug 2024

Remote attackers can detect the browser's UI locale by measuring button width, bypassing privacy settings in Tor Browser.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2019-12383?

CVE-2019-12383 is a medium-severity vulnerability in n/a, published on 28 May 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Tor Browser before 8.0.1 has an information exposure vulnerability. It allows remote attackers to detect the browser's UI locale by measuring a button width, even if the user has a "Don't send my language" setting.

Weakness: CWE-203

Which versions are affected by CVE-2019-12383?

It affects 1 product.

Products include Torproject Tor Browser.

How do I fix CVE-2019-12383?

No fix has been published for CVE-2019-12383 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-12383 being exploited?

There is no known exploitation of CVE-2019-12383 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-12383, GHSA-9c7r-v445-c52r.