CVE-2021-23976

Summary

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.

Affected Software

VendorProductVersion RangeStatus
MozillaFirefox< 86affected

Weaknesses

  • Local spoofing of web manifests for arbitrary pages in Firefox for Android

ADP Enrichment

CVE Program Container

Additional References

References