Mozilla: Redefinition of non-configurable JavaScript object properties (MFSA 2015-82)
Published Aug 16, 2015
5.0
MEDIUMCVSS 2.0
EPSS 3.37%
Description
Mozilla Firefox before 40.0 and Firefox ESR 38.x before 38.2 do not impose certain ECMAScript 6 requirements on JavaScript object properties, which allows remote attackers to bypass the Same Origin Policy via the reviver parameter to the JSON.parse method.
Affected products
No data.
Configuration 1
- 12.04
- 14.04
- 15.04
- 13.1
- 13.2
No data.
Red Hat Enterprise Linux 5
firefox-0:38.2.0-4.el5_11
Fixed · RHSA-2015:1586
Red Hat Enterprise Linux 6
firefox-0:38.2.0-4.el6_7
Fixed · RHSA-2015:1586
Red Hat Enterprise Linux 7
firefox-0:38.2.0-4.ael7b_1
Fixed · RHSA-2015:1586
Red Hat Enterprise Linux 5
thunderbird
Not affected
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 7
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox-0:38.2.0-4.el5_11 | Fixed | RHSA-2015:1586 |
| Red Hat Enterprise Linux 6 | firefox-0:38.2.0-4.el6_7 | Fixed | RHSA-2015:1586 |
| Red Hat Enterprise Linux 7 | firefox-0:38.2.0-4.ael7b_1 | Fixed | RHSA-2015:1586 |
| Red Hat Enterprise Linux 5 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 7 | thunderbird | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.37% (0.03366) | 88.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.37% (0.03366) | 87.13th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.66% (0.00664) | 68.84th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.55% (0.02551) | 75.76th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.66% (0.00664) | 69.50th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.62% (0.00621) | 79.57th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.62% (0.00621) | 78.20th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.62% (0.00621) | 75.58th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
References (22)
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-08/msg00030.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-08/msg00031.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2015-1586.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3333 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2015/mfsa2015-82.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRM
- http://www.securitytracker.com/id/1033247 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2702-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2702-2 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2702-3 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-4478 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1105914 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1252282 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-4478
- https://security.gentoo.org/glsa/201605-06 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-4478
- https://www.mozilla.org/security/announce/2015/mfsa2015-82.html
Change history (0)
No recorded changes yet.