Mozilla Firefox up to 73.x Web Extension Request information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

A vulnerability has been found in Mozilla Firefox up to 73.x (Web Browser) and classified as problematic. Affected by this vulnerability is some unknown processing of the component Web Extension Handler. The manipulation as part of a Request leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

When a Web Extension had the all-urls permission and made a fetch request with a mode set to 'same-origin', it was possible for the Web Extension to read local files. This vulnerability affects Firefox < 74.

The weakness was disclosed 03/25/2020. This vulnerability is known as CVE-2020-6809 since 01/10/2020. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading to version 74.0 eliminates this vulnerability.

The entries 152351, 152348 and 152346 are pretty similar.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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

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

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 74.0

Timelineinfo

01/10/2020 🔍
03/25/2020 +75 days 🔍
03/26/2020 +1 days 🔍
03/26/2020 +0 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Status: Not defined

CVE: CVE-2020-6809 (🔍)
See also: 🔍

Entryinfo

Created: 03/26/2020 08:00
Updated: 03/26/2020 08:05
Changes: 03/26/2020 08:00 (40), 03/26/2020 08:05 (18)
Complete: 🔍

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