Tor Browser up to 8.0.0 UI Button Fingerprint information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Tor Browser up to 8.0.0. Impacted is an unknown function of the component UI. Performing a manipulation as part of Button results in information disclosure (Fingerprint). This vulnerability is reported as CVE-2019-12383. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Tor Browser up to 8.0.0 (Network Encryption Software). This affects an unknown code of the component UI. The manipulation as part of a Button leads to a information disclosure vulnerability (Fingerprint). CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The weakness was disclosed 05/28/2019 (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2019-12383 since 05/27/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 232039 (Linux Distros Unpatched Vulnerability : CVE-2019-12383), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 8.0.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (232039). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Fingerprint
Class: Information disclosure / Fingerprint
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 232039
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2019-12383

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Browser 8.0.1
Patch: gitweb.torproject.org

Timelineinfo

05/27/2019 🔍
05/28/2019 +1 days 🔍
05/28/2019 +0 days 🔍
03/07/2025 +2110 days 🔍

Sourcesinfo

Advisory: 24056⛔
Status: Confirmed

CVE: CVE-2019-12383 (🔍)
GCVE (CVE): GCVE-0-2019-12383
GCVE (VulDB): GCVE-100-135657
SecurityFocus: 108484

Entryinfo

Created: 05/28/2019 09:59
Updated: 03/07/2025 10:47
Changes: 05/28/2019 09:59 (59), 06/16/2020 17:39 (1), 09/24/2023 14:49 (6), 03/07/2025 10:47 (18)
Complete: 🔍
Cache ID: 216:1F7:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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