VDB-154365 · CVE-2020-6824 · GCVE-0-2020-6824

Mozilla Firefox up to 74.x Private Browsing Password session fixiation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
2.7	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Mozilla Firefox up to 74.x. This affects an unknown part of the component Private Browsing. Performing a manipulation results in session fixiation (Password). This vulnerability is known as CVE-2020-6824. Attacking locally is a requirement. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Mozilla Firefox up to 74.x (Web Browser). It has been classified as problematic. This affects an unknown functionality of the component Private Browsing. The manipulation with an unknown input leads to a session fixiation vulnerability (Password). CWE is classifying the issue as CWE-384. Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. This is going to have an impact on confidentiality. The summary by CVE is:

Initially, a user opens a Private Browsing Window and generates a password for a site, then closes the Private Browsing Window but leaves Firefox open. Subsequently, if the user had opened a new Private Browsing Window, revisited the same site, and generated a new password - the generated passwords would have been identical, rather than independent. This vulnerability affects Firefox < 75.

The weakness was published 04/24/2020. This vulnerability is uniquely identified as CVE-2020-6824 since 01/10/2020. An attack has to be approached locally. The successful exploitation needs a authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

Upgrading to version 75.0 eliminates this vulnerability.

Similar entries are available at VDB-154367 and VDB-154364. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Web Browser

Vendor

Mozilla

Name

Firefox

Version

74.x

License

open-source

Website

Vendor: https://www.mozilla.org/
Product: https://www.mozilla.org/en-US/firefox/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.8
VulDB Meta Temp Score: 2.7

VulDB Base Score: 2.8
VulDB Temp Score: 2.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 2.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: Password
Class: Session fixiation / Password
CWE: CWE-384
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 75.0

Timelineinfo

01/10/2020 🔍
04/24/2020 +105 days 🔍
04/25/2020 +1 days 🔍
05/06/2025 +1837 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: mozilla.org
Status: Confirmed

CVE: CVE-2020-6824 (🔍)
GCVE (CVE): GCVE-0-2020-6824
GCVE (VulDB): GCVE-100-154365
See also: 🔍

Entryinfo

Created: 04/25/2020 17:02
Updated: 05/06/2025 12:29
Changes: 04/25/2020 17:02 (40), 04/25/2020 17:07 (18), 06/02/2024 17:46 (17), 06/02/2024 17:54 (1), 05/06/2025 12:29 (6)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.