MEDIUM
Mozilla: Appended period to hostnames can bypass HPKP and HSTS protections (MFSA 2015-13)
Published Feb 25, 2015
5.0
MEDIUMCVSS 2.0
EPSS 1.05%
Description
Mozilla Firefox before 36.0 does not properly recognize the equivalence of domain names with and without a trailing . (dot) character, which allows man-in-the-middle attackers to bypass the HPKP and HSTS protection mechanisms by constructing a URL with this character and leveraging access to an X.509 certificate for a domain with this character.
Affected products
No data.
Configuration 2
OR
- 12.04
- 14.04
- 14.10
Configuration 3
OR
- ≤ 35.0.1
- 0.1
- 0.2
- 0.3
- 0.4
- 0.5
- 0.6
- 0.6.1
- 0.7
- 0.7.1
- 0.8
- 0.9
- 0.9
- 0.9.1
- 0.9.2
- 0.9.3
- 0.10
- 0.10.1
- 1.0
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.4
- 1.0.5
- 1.0.6
- 1.0.7
- 1.0.8
- 1.4.1
- 1.5
- 1.5
- 1.5
- 1.5.0.1
- 1.5.0.2
- 1.5.0.3
- 1.5.0.4
- 1.5.0.5
- 1.5.0.6
- 1.5.0.7
- 1.5.0.8
- 1.5.0.9
- 1.5.0.10
- 1.5.0.11
- 1.5.0.12
- 1.5.1
- 1.5.2
- 1.5.3
- 1.5.4
- 1.5.5
- 1.5.6
- 1.5.7
- 1.5.8
- 1.8
- 2.0
- 2.0.0.1
- 2.0.0.2
- 2.0.0.3
- 2.0.0.4
- 2.0.0.5
- 2.0.0.6
- 2.0.0.7
- 2.0.0.8
- 2.0.0.9
- 2.0.0.10
- 2.0.0.11
- 2.0.0.12
- 2.0.0.13
- 2.0.0.14
- 2.0.0.15
- 2.0.0.16
- 2.0.0.17
- 2.0.0.18
- 2.0.0.19
- 2.0.0.20
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.0.10
- 3.0.11
- 3.0.12
- 3.0.13
- 3.0.14
- 3.0.15
- 3.0.16
- 3.0.17
- 3.0.18
- 3.0.19
- 3.5
- 3.5.1
- 3.5.2
- 3.5.3
- 3.5.4
- 3.5.5
- 3.5.6
- 3.5.7
- 3.5.8
- 3.5.9
- 3.5.10
- 3.5.11
- 3.5.12
- 3.5.13
- 3.5.14
- 3.5.15
- 3.5.16
- 3.5.17
- 3.5.18
- 3.5.19
- 3.6
- 3.6.2
- 3.6.3
- 3.6.4
- 3.6.6
- 3.6.7
- 3.6.8
- 3.6.9
- 3.6.10
- 3.6.11
- 3.6.12
- 3.6.13
- 3.6.14
- 3.6.15
- 3.6.16
- 3.6.17
- 3.6.18
- 3.6.19
- 3.6.20
- 3.6.21
- 3.6.22
- 3.6.23
- 3.6.24
- 3.6.25
- 3.6.26
- 3.6.27
- 3.6.28
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0.1
- 5.0
- 5.0.1
- 6.0
- 6.0.1
- 6.0.2
- 7.0
- 7.0.1
- 8.0
- 8.0.1
- 9.0
- 9.0.1
- 10.0
- 10.0.1
- 10.0.2
- 10.0.3
- 10.0.4
- 10.0.5
- 10.0.6
- 10.0.7
- 10.0.8
- 10.0.9
- 10.0.10
- 10.0.11
- 10.0.12
- 11.0
- 12.0
- 12.0
- 13.0
- 13.0.1
- 14.0
- 14.0.1
- 15.0
- 15.0.1
- 16.0
- 16.0.1
- 16.0.2
- 17.0
- 17.0.1
- 17.0.2
- 17.0.3
- 17.0.4
- 17.0.5
- 17.0.6
- 17.0.7
- 17.0.8
- 17.0.9
- 17.0.10
- 17.0.11
- 18.0
- 18.0.1
- 18.0.2
- 19.0
- 19.0.1
- 19.0.2
- 20.0
- 20.0.1
- 21.0
- 22.0
- 23.0
- 23.0.1
- 24.0
- 24.1
- 24.1.1
- 25.0
- 25.0.1
- 26.0
- 27.0
- 27.0.1
- 28.0
- 29.0
- 29.0.1
- 30.0
- 31.0
- 31.1.0
- 32.0
- 33.0
- 34.0.5
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
| 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 |
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.05% 0.01052
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.01052
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 3, 2026 | 1.05% (0.01052) | 63.12th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.05% (0.01052) | 59.75th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00135) | 30.69th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.20% (0.00204) | 59.30th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00206) | 58.81th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00206) | 56.81th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.18% (0.01183) | 61.76th | v2 (v2022.01.01) |
| Oct 19, 2022 | 1.18% (0.01183) | 60.79th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.18% (0.01183) | 58.77th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.18% (0.01183) | 35.15th | v2 (v2022.01.01) |
Weaknesses (1)
References (13)
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00000.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-03/msg00067.html vendor-advisoryx_refsource_SUSE
- http://www.mozilla.org/security/announce/2015/mfsa2015-13.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/72752 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/USN-2505-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-0832 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1065909 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1195610 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-0832
- https://security.gentoo.org/glsa/201504-01 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-0832
- https://www.mozilla.org/en-US/security/advisories/mfsa2015-13
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00000.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-updates/2015-03/msg00067.html | vendor-advisoryx_refsource_SUSE | |
| http://www.mozilla.org/security/announce/2015/mfsa2015-13.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html | x_refsource_CONFIRM | |
| http://www.securityfocus.com/bid/72752 | vdb-entryx_refsource_BID | |
| http://www.ubuntu.com/usn/USN-2505-1 | vendor-advisoryx_refsource_UBUNTU | |
| https://access.redhat.com/security/cve/CVE-2015-0832 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1065909 | x_refsource_CONFIRM | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1195610 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-0832 | ||
| https://security.gentoo.org/glsa/201504-01 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2015-0832 | ||
| https://www.mozilla.org/en-US/security/advisories/mfsa2015-13 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mozilla
Published Feb 25, 2015
Updated Aug 6, 2024
Reserved Jan 7, 2015
Link CVE-2015-0832
CISA Vulnrichment
Updated n/a