CVE-2016-2820

MEDIUM

Mozilla Firefox < 45.0.2 - Improper Access Control

Title source: rule

Description

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.

References (9)

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html

[Mailing List] http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html

[Vendor Advisory] http://www.mozilla.org/security/announce/2016/mfsa2016-48.html

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1035692

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2936-1

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2936-2

[Vendor Advisory] http://www.ubuntu.com/usn/USN-2936-3

[Issue Tracking] https://bugzilla.mozilla.org/show_bug.cgi?id=870870

[Third Party Advisory] https://security.gentoo.org/glsa/201701-15

Scores

CVSS v3 4.3

EPSS 0.0042

EPSS Percentile 61.6%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Classification

CWE

CWE-284

Status draft

Affected Products (1)

mozilla/firefox < 45.0.2

Timeline

Published Apr 30, 2016

Tracked Since Feb 18, 2026