CVE - CVE-2021-23986

CVE-ID
CVE-2021-23986	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://bugzilla.mozilla.org/show_bug.cgi?id=1692623 URL:https://bugzilla.mozilla.org/show_bug.cgi?id=1692623 MISC:https://www.mozilla.org/security/advisories/mfsa2021-10/ URL:https://www.mozilla.org/security/advisories/mfsa2021-10/
Assigning CNA
Mozilla Corporation
Date Record Created
20210113	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20210113)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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