CVE-2019-12383

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.74% Top 30%
Vendor Advisory torproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://trac.torproject.org/projects/tor/ticket/24056 vendor advisory
https://hackerone.com/reports/282748 third party advisory issue tracking
https://gitweb.torproject.org/tor-browser.git/commit/?id=cbb04b72c68272c2de42f157d40cd7d29a6b7b55 patch mailing list third party advisory
http://www.securityfocus.com/bid/108484 broken link third party advisory vdb entry

Frequently Asked Questions

What is the severity of CVE-2019-12383?
CVE-2019-12383 has been scored as a medium severity vulnerability.
How to fix CVE-2019-12383?
To fix CVE-2019-12383, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-12383 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-12383 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.