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CVE-2021-29971

Date: August 5, 2021

If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host - irrespective of scheme or port - would be granted that permission. *This bug only affects Firefox for Android. Other operating systems are unaffected.*. This vulnerability affects Firefox < 90.

Severity Score

Related Resources (5)

https://bugzilla.mozilla.org/show_bug.cgi?id=1713638
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-29971
https://nvd.nist.gov/vuln/detail/CVE-2021-29971
https://www.mozilla.org/security/advisories/mfsa2021-28/
https://www.mend.io/vulnerability-database/CVE-2021-29971

Severity Score

Weakness Type (CWE)

Improper Preservation of Permissions

CWE-281

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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