CVE-2021-23976

Description

When accepting a malicious intent from other installed apps, Firefox for Android accepted manifests from arbitrary file paths and allowed declaring webapp manifests for other origins. This could be used to gain fullscreen access for UI spoofing and could also lead to cross-origin attacks on targeted websites. Note: This issue is a different issue from CVE-2020-26954 and only affected Firefox for Android. Other operating systems are unaffected. This vulnerability affects Firefox < 86.

References

https://www.mozilla.org/security/advisories/mfsa2021-07/

https://security.gentoo.org/glsa/202104-10

https://bugzilla.mozilla.org/show_bug.cgi?id=1684627

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3