A malicious extension with the 'search' permission could have installed a new search engine whose favicon referenced a cross-origin URL. The response to this cross-origin request could have been read by the extension, allowing a same-origin policy bypass by the extension, which should not have cross-origin permissions. This cross-origin request was made without cookies, so the sensitive information disclosed by the violation was limited to local-network resources or resources that perform IP-based authentication. This vulnerability affects Firefox < 87.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1692623 | Issue Tracking Permissions Required Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-10/ | Vendor Advisory |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1692623 | Issue Tracking Permissions Required Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2021-10/ | Vendor Advisory |
Configurations
History
21 Nov 2024, 05:52
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://bugzilla.mozilla.org/show_bug.cgi?id=1692623 - Issue Tracking, Permissions Required, Vendor Advisory | |
| References | () https://www.mozilla.org/security/advisories/mfsa2021-10/ - Vendor Advisory |
Information
Published : 2021-03-31 14:15
Updated : 2024-11-21 05:52
NVD link : CVE-2021-23986
Mitre link : CVE-2021-23986
CVE.ORG link : CVE-2021-23986
JSON object : View
Products Affected
mozilla
- firefox
CWE
CWE-346
Origin Validation Error