Improper Origin Restriction in Firefox Health Reports Allows for Sharing Preferences Modification

CVE-2016-2820 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:P/A:N

The Firefox Health Reports (aka FHR or about:healthreport) feature in Mozilla Firefox before 46.0 does not properly restrict the origin of events, which makes it easier for remote attackers to modify sharing preferences by leveraging access to the remote-report IFRAME element.

Learn more about our Cis Benchmark Audit For Mozilla Firefox.