Mozilla: Add-on lightweight theme installation approval bypassed through MITM attack (MFSA 2015-32)
Published Apr 1, 2015
4.3
MEDIUMCVSS 2.0
EPSS 1.26%
Description
Mozilla Firefox before 37.0 does not require an HTTPS session for lightweight theme add-on installations, which allows man-in-the-middle attackers to bypass an intended user-confirmation requirement by deploying a crafted web site and conducting a DNS spoofing attack against a mozilla.org subdomain.
Affected products
No data.
Configuration 3
- 12.04
- 14.04
- 14.10
No data.
Red Hat Enterprise Linux 5
firefox
Not affected
Red Hat Enterprise Linux 5
thunderbird
Not affected
Red Hat Enterprise Linux 6
firefox
Not affected
Red Hat Enterprise Linux 6
thunderbird
Not affected
Red Hat Enterprise Linux 7
firefox
Not affected
Red Hat Enterprise Linux 7
thunderbird
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 5 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 6 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 6 | thunderbird | Not affected | n/a |
| Red Hat Enterprise Linux 7 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 7 | thunderbird | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the version of firefox and thunderbird as shipped with Red Hat Enterprise Linux 5, 6 and 7.
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:M/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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.26% (0.01261) | 68.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.26% (0.01261) | 65.67th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.17% (0.00169) | 35.61th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.20% (0.00197) | 58.56th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00207) | 58.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00207) | 56.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00003.html vendor-advisoryx_refsource_SUSE
- http://www.mozilla.org/security/announce/2015/mfsa2015-32.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRM
- http://www.securitytracker.com/id/1031996 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2550-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-0812 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1128126 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1207071 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-0812
- https://security.gentoo.org/glsa/201512-10 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-0812
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00003.html | vendor-advisoryx_refsource_SUSE | |
| http://www.mozilla.org/security/announce/2015/mfsa2015-32.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html | x_refsource_CONFIRM | |
| http://www.securitytracker.com/id/1031996 | vdb-entryx_refsource_SECTRACK | |
| http://www.ubuntu.com/usn/USN-2550-1 | vendor-advisoryx_refsource_UBUNTU | |
| https://access.redhat.com/security/cve/CVE-2015-0812 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1128126 | x_refsource_CONFIRM | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1207071 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-0812 | ||
| https://security.gentoo.org/glsa/201512-10 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2015-0812 |
Change history (0)
No recorded changes yet.