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.
References
Link | Resource |
---|---|
https://bugzilla.mozilla.org/show_bug.cgi?id=1659155 | Issue Tracking Permissions Required Vendor Advisory |
https://www.mozilla.org/security/advisories/mfsa2021-48/ | Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mozilla
Published: 2021-12-08T21:20:58
Updated: 2021-12-08T21:20:58
Reserved: 2021-11-08T00:00:00
Link: CVE-2021-43531
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-12-08T22:15:09.310
Modified: 2021-12-10T16:55:28.263
Link: CVE-2021-43531
JSON object: View
Redhat Information
No data.
CWE