Mozilla Firefox/Thunderbird up to 90.x on Linux Permissions ui layer

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Mozilla Firefox and Thunderbird up to 90.x on Linux. Affected by this issue is some unknown functionality of the component Permissions Handler. Such manipulation leads to ui layer. This vulnerability is listed as CVE-2021-29987. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mozilla Firefox and Thunderbird up to 90.x on Linux (Web Browser). Affected by this issue is an unknown functionality of the component Permissions Handler. The manipulation with an unknown input leads to a ui layer vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was presented 08/18/2021. The advisory is shared for download at mozilla.org. This vulnerability is handled as CVE-2021-29987. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 91.0 eliminates this vulnerability. The upgrade is hosted for download at mozilla.org.

Once again VulDB remains the best source for 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: 4.9
VulDB Meta Temp Score: 4.7

VulDB Base Score: 4.9
VulDB Temp Score: 4.7
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: Partially

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/Thunderbird 91.0

Timelineinfo

04/01/2021 🔍
08/18/2021 +139 days 🔍
08/18/2021 +0 days 🔍
08/19/2021 +1 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: mozilla.org
Status: Confirmed

CVE: CVE-2021-29987 (🔍)
GCVE (CVE): GCVE-0-2021-29987
GCVE (VulDB): GCVE-100-181028

Entryinfo

Created: 08/18/2021 09:15
Updated: 08/19/2021 18:40
Changes: 08/18/2021 09:15 (42), 08/19/2021 18:40 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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