|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.
A vulnerability classified as problematic has been found in Mozilla Firefox up to 94.x on Android (Web Browser). Affected is an unknown function of the component Address Bar Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. This is going to have an impact on integrity. An attacker might be able to inject arbitrary html and script code into the web site. This would alter the appearance and would make it possible to initiate further attacks against site visitors. CVE summarizes:
When receiving a URL through a SEND intent, Firefox would have searched for the text, but subsequent usages of the address bar might have caused the URL to load unintentionally, which could lead to XSS and spoofing attacks. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 95.
The weakness was released 12/09/2021. The advisory is available at mozilla.org. This vulnerability is traded as CVE-2021-43544 since 11/08/2021. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 12/12/2021). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.
Upgrading to version 95.0 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.
CVSSv3VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1
VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍
VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
ExploitingClass: Cross site scripting
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒
Threat IntelligenceInterest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍
0-Day Time: 🔒
Upgrade: Firefox 95.0
Timeline11/08/2021 CVE assigned
12/09/2021 +31 days Advisory disclosed
12/09/2021 +0 days VulDB entry created
12/12/2021 +3 days VulDB last update
CVE: CVE-2021-43544 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20130704
EntryCreated: 12/09/2021 08:59 AM
Updated: 12/12/2021 02:25 AM
Changes: (1) source_cve_nvd_summary
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