Mozilla Firefox up to 93.x Internationalized Domain Name ui layer

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 (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Mozilla Firefox up to 93.x. It has been classified as problematic. Affected is an unknown function of the component Internationalized Domain Name Handler. Performing a manipulation results in ui layer. This vulnerability is reported as CVE-2021-43533. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Mozilla Firefox up to 93.x (Web Browser). This affects an unknown code block of the component Internationalized Domain Name Handler. The manipulation with an unknown input leads to a ui layer vulnerability. CWE is classifying the issue as CWE-1021. The web application does not restrict or incorrectly restricts frame objects or UI layers that belong to another application or domain, which can lead to user confusion about which interface the user is interacting with. This is going to have an impact on integrity, and availability.

The weakness was disclosed 12/09/2021. The advisory is shared at mozilla.org. This vulnerability is uniquely identified as CVE-2021-43533 since 11/08/2021. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/09/2021).

Upgrading to version 94.0 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.

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

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Ui layer
CWE: CWE-1021
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firefox 94.0

Timelineinfo

11/08/2021 🔍
12/09/2021 +31 days 🔍
12/09/2021 +0 days 🔍
12/12/2021 +3 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: mozilla.org
Status: Confirmed

CVE: CVE-2021-43533 (🔍)
GCVE (CVE): GCVE-0-2021-43533
GCVE (VulDB): GCVE-100-187857

Entryinfo

Created: 12/09/2021 08:54
Updated: 12/12/2021 01:04
Changes: 12/09/2021 08:54 (40), 12/12/2021 01:04 (1)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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