CVE-2021-43531
MEDIUM
4,3
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: none
MEDIUM
4,3
Source: [email protected]
Access Vector: network
Access Complexity: medium
Authentication: none
Confidentiality: partial
Integrity: none
Availability: none
Description
AI Translation Available
When a user loaded a Web Extensions context menu, the Web Extension could access the post-redirect URL of the element clicked. If the Web Extension lacked the WebRequest permission for the hosts involved in the redirect, this would be a same-origin-violation leaking data the Web Extension should have access to. This was fixed to provide the pre-redirect URL. This is related to CVE-2021-43532 but in the context of Web Extensions. This vulnerability affects Firefox < 94.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0014
Percentile
0,3th
Updated
EPSS Score Trend (Last 91 Days)
346
Origin Validation Error
DraftCommon Consequences
Security Scopes Affected:
Other
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Varies By Context
Applicable Platforms
Technologies:
Not Technology-Specific, Web Based
Application
Firefox by Mozilla
Version Range Affected
To
94.0
(exclusive)
CPE Identifier
View Detailed Analysis
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://bugzilla.mozilla.org/show_bug.cgi?id=1659155
https://www.mozilla.org/security/advisories/mfsa2021-48/
https://bugzilla.mozilla.org/show_bug.cgi?id=1659155
https://www.mozilla.org/security/advisories/mfsa2021-48/