CVE-2016-2820
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
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.41% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 72.1% of scored records. A rank, not a probability.
- NVD base score
- 4.3 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-04-30 17:00Z10 YR AGO
- Last updated
- 2024-08-05 23:32Z2 YR AGO
- Reserved
- 2016-03-01
- Assigning CNA
- mozilla
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-284Improper Access ControlPillar
- Data version
- 5.1
- Document digest
- ae5e8d8c3476e099ae4abcd4a3249867277856decfb7f7de7b680426a73a49c4
05 Affected products
06 References
- lists.opensuse.orgopenSUSE-SU-2016:1211http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00005.html
- www.securitytracker.com1035692http://www.securitytracker.com/id/1035692
- lists.opensuse.orgopenSUSE-SU-2016:1251http://lists.opensuse.org/opensuse-updates/2016-05/msg00038.html
- www.ubuntu.comUSN-2936-2http://www.ubuntu.com/usn/USN-2936-2
- security.gentoo.orgGLSA-201701-15https://security.gentoo.org/glsa/201701-15
- www.ubuntu.comUSN-2936-1http://www.ubuntu.com/usn/USN-2936-1
- www.ubuntu.comUSN-2936-3http://www.ubuntu.com/usn/USN-2936-3
- www.mozilla.orghttp://www.mozilla.org/security/announce/2016/mfsa2016-48.html
- bugzilla.mozilla.orghttps://bugzilla.mozilla.org/show_bug.cgi?id=870870
07 Fixed in
Ubuntu 14.04 LTS
- firefox Fixed in 46.0+build5-0ubuntu0.14.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- firefox Fixed in 46.0+build5-0ubuntu0.16.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.