Mozilla: Mixed content WebSocket policy bypass through workers (MFSA 2015-132)
Published Nov 5, 2015
5.0
MEDIUMCVSS 2.0
EPSS 2.54%
Description
Mozilla Firefox before 42.0 and Firefox ESR 38.x before 38.4 improperly control the ability of a web worker to create a WebSocket object, which allows remote attackers to bypass intended mixed-content restrictions via crafted JavaScript code.
Affected products
No data.
Configuration 2
No data.
Red Hat Enterprise Linux 5
firefox-0:38.4.0-1.el5_11
Fixed · RHSA-2015:1982
Red Hat Enterprise Linux 5
thunderbird-0:38.4.0-1.el5_11
Fixed · RHSA-2015:2519
Red Hat Enterprise Linux 6
firefox-0:38.4.0-1.el6_7
Fixed · RHSA-2015:1982
Red Hat Enterprise Linux 6
thunderbird-0:38.4.0-1.el6_7
Fixed · RHSA-2015:2519
Red Hat Enterprise Linux 7
firefox-0:38.4.0-1.ael7b_1
Fixed · RHSA-2015:1982
Red Hat Enterprise Linux 7
thunderbird-0:38.4.0-1.el7_2
Fixed · RHSA-2015:2519
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox-0:38.4.0-1.el5_11 | Fixed | RHSA-2015:1982 |
| Red Hat Enterprise Linux 5 | thunderbird-0:38.4.0-1.el5_11 | Fixed | RHSA-2015:2519 |
| Red Hat Enterprise Linux 6 | firefox-0:38.4.0-1.el6_7 | Fixed | RHSA-2015:1982 |
| Red Hat Enterprise Linux 6 | thunderbird-0:38.4.0-1.el6_7 | Fixed | RHSA-2015:2519 |
| Red Hat Enterprise Linux 7 | firefox-0:38.4.0-1.ael7b_1 | Fixed | RHSA-2015:1982 |
| Red Hat Enterprise Linux 7 | thunderbird-0:38.4.0-1.el7_2 | Fixed | RHSA-2015:2519 |
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.54% (0.02535) | 84.38th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.54% (0.02535) | 82.83th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.84% (0.00844) | 73.15th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.62% (0.00621) | 79.57th | v3 (v2023.03.01) |
| Feb 29, 2024 | 0.88% (0.00880) | 82.02th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.88% (0.00880) | 80.01th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.36% (0.04358) | 88.02th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.36% (0.04358) | 86.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.36% (0.04358) | 70.59th | v2 (v2022.01.01) |
References (25)
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00013.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00015.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00020.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00021.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/2015-12/msg00037.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00049.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2015-1982.html vendor-advisoryx_refsource_REDHAT
- http://rhn.redhat.com/errata/RHSA-2015-2519.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3393 vendor-advisoryx_refsource_DEBIAN
- http://www.debian.org/security/2015/dsa-3410 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2015/mfsa2015-132.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/77411 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1034069 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2785-1 vendor-advisoryx_refsource_UBUNTU
- http://www.ubuntu.com/usn/USN-2819-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-7197 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1204269 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1277351 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-7197
- https://security.gentoo.org/glsa/201512-10 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-7197
- https://www.mozilla.org/security/announce/2015/mfsa2015-132.html
Change history (0)
No recorded changes yet.