CVE-2021-23957 : Navigations through the Android-specific `intent` URL scheme could have been mis

Navigations through the Android-specific `intent` URL scheme could have been misused to escape iframe sandbox. Note: This issue only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 85.

Published 2021-02-26 03:15:14

Updated 2021-03-03 18:00:28

Source Mozilla Corporation

View at NVD, CVE.org

Products affected by CVE-2021-23957

Mozilla » Firefox » For Android
Versions before (<) 85.0
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:android:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-23957

EPSS FAQ

0.08%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 35 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-23957

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:P/A:N	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
7.4	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N	2.8	4.0	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: None Integrity: High Availability: None

References for CVE-2021-23957

https://bugzilla.mozilla.org/show_bug.cgi?id=1584582

Access Denied
Issue Tracking;Permissions Required;Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2021-03/

Security Vulnerabilities fixed in Firefox 85 — Mozilla
Release Notes;Vendor Advisory

CVEs referencing this url

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Vulnerability Details : CVE-2021-23957

Products affected by CVE-2021-23957

Exploit prediction scoring system (EPSS) score for CVE-2021-23957

CVSS scores for CVE-2021-23957

References for CVE-2021-23957