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.
2015-02-25T11:59:12.720
2025-04-12T10:46:40.837
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:P/A:N
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Operating System | opensuse | opensuse | 13.1 | Yes |
| Operating System | opensuse | opensuse | 13.2 | Yes |
| Operating System | canonical | ubuntu_linux | 12.04 | Yes |
| Operating System | canonical | ubuntu_linux | 14.04 | Yes |
| Operating System | canonical | ubuntu_linux | 14.10 | Yes |
| Application | mozilla | firefox | ≤ 35.0.1 | Yes |
| Application | mozilla | firefox | 0.1 | Yes |
| Application | mozilla | firefox | 0.2 | Yes |
| Application | mozilla | firefox | 0.3 | Yes |
| Application | mozilla | firefox | 0.4 | Yes |
| Application | mozilla | firefox | 0.5 | Yes |
| Application | mozilla | firefox | 0.6 | Yes |
| Application | mozilla | firefox | 0.6.1 | Yes |
| Application | mozilla | firefox | 0.7 | Yes |
| Application | mozilla | firefox | 0.7.1 | Yes |
| Application | mozilla | firefox | 0.8 | Yes |
| Application | mozilla | firefox | 0.9 | Yes |
| Application | mozilla | firefox | 0.9 | Yes |
| Application | mozilla | firefox | 0.9.1 | Yes |
| Application | mozilla | firefox | 0.9.2 | Yes |
| Application | mozilla | firefox | 0.9.3 | Yes |
| Application | mozilla | firefox | 0.10 | Yes |
| Application | mozilla | firefox | 0.10.1 | Yes |
| Application | mozilla | firefox | 1.0 | Yes |
| Application | mozilla | firefox | 1.0 | Yes |
| Application | mozilla | firefox | 1.0.1 | Yes |
| Application | mozilla | firefox | 1.0.2 | Yes |
| Application | mozilla | firefox | 1.0.3 | Yes |
| Application | mozilla | firefox | 1.0.4 | Yes |
| Application | mozilla | firefox | 1.0.5 | Yes |
| Application | mozilla | firefox | 1.0.6 | Yes |
| Application | mozilla | firefox | 1.0.7 | Yes |
| Application | mozilla | firefox | 1.0.8 | Yes |
| Application | mozilla | firefox | 1.4.1 | Yes |
| Application | mozilla | firefox | 1.5 | Yes |
| Application | mozilla | firefox | 1.5 | Yes |
| Application | mozilla | firefox | 1.5 | Yes |
| Application | mozilla | firefox | 1.5.0.1 | Yes |
| Application | mozilla | firefox | 1.5.0.2 | Yes |
| Application | mozilla | firefox | 1.5.0.3 | Yes |
| Application | mozilla | firefox | 1.5.0.4 | Yes |
| Application | mozilla | firefox | 1.5.0.5 | Yes |
| Application | mozilla | firefox | 1.5.0.6 | Yes |
| Application | mozilla | firefox | 1.5.0.7 | Yes |
| Application | mozilla | firefox | 1.5.0.8 | Yes |
| Application | mozilla | firefox | 1.5.0.9 | Yes |
| Application | mozilla | firefox | 1.5.0.10 | Yes |
| Application | mozilla | firefox | 1.5.0.11 | Yes |
| Application | mozilla | firefox | 1.5.0.12 | Yes |
| Application | mozilla | firefox | 1.5.1 | Yes |
| Application | mozilla | firefox | 1.5.2 | Yes |
| Application | mozilla | firefox | 1.5.3 | Yes |
| Application | mozilla | firefox | 1.5.4 | Yes |
| Application | mozilla | firefox | 1.5.5 | Yes |
| Application | mozilla | firefox | 1.5.6 | Yes |
| Application | mozilla | firefox | 1.5.7 | Yes |
| Application | mozilla | firefox | 1.5.8 | Yes |
| Application | mozilla | firefox | 1.8 | Yes |
| Application | mozilla | firefox | 2.0 | Yes |
| Application | mozilla | firefox | 2.0.0.1 | Yes |
| Application | mozilla | firefox | 2.0.0.2 | Yes |
| Application | mozilla | firefox | 2.0.0.3 | Yes |
| Application | mozilla | firefox | 2.0.0.4 | Yes |
| Application | mozilla | firefox | 2.0.0.5 | Yes |
| Application | mozilla | firefox | 2.0.0.6 | Yes |
| Application | mozilla | firefox | 2.0.0.7 | Yes |
| Application | mozilla | firefox | 2.0.0.8 | Yes |
| Application | mozilla | firefox | 2.0.0.9 | Yes |
| Application | mozilla | firefox | 2.0.0.10 | Yes |
| Application | mozilla | firefox | 2.0.0.11 | Yes |
| Application | mozilla | firefox | 2.0.0.12 | Yes |
| Application | mozilla | firefox | 2.0.0.13 | Yes |
| Application | mozilla | firefox | 2.0.0.14 | Yes |
| Application | mozilla | firefox | 2.0.0.15 | Yes |
| Application | mozilla | firefox | 2.0.0.16 | Yes |
| Application | mozilla | firefox | 2.0.0.17 | Yes |
| Application | mozilla | firefox | 2.0.0.18 | Yes |
| Application | mozilla | firefox | 2.0.0.19 | Yes |
| Application | mozilla | firefox | 2.0.0.20 | Yes |
| Application | mozilla | firefox | 3.0 | Yes |
| Application | mozilla | firefox | 3.0.1 | Yes |
| Application | mozilla | firefox | 3.0.2 | Yes |
| Application | mozilla | firefox | 3.0.3 | Yes |
| Application | mozilla | firefox | 3.0.4 | Yes |
| Application | mozilla | firefox | 3.0.5 | Yes |
| Application | mozilla | firefox | 3.0.6 | Yes |
| Application | mozilla | firefox | 3.0.7 | Yes |
| Application | mozilla | firefox | 3.0.8 | Yes |
| Application | mozilla | firefox | 3.0.9 | Yes |
| Application | mozilla | firefox | 3.0.10 | Yes |
| Application | mozilla | firefox | 3.0.11 | Yes |
| Application | mozilla | firefox | 3.0.12 | Yes |
| Application | mozilla | firefox | 3.0.13 | Yes |
| Application | mozilla | firefox | 3.0.14 | Yes |
| Application | mozilla | firefox | 3.0.15 | Yes |
| Application | mozilla | firefox | 3.0.16 | Yes |
| Application | mozilla | firefox | 3.0.17 | Yes |
| Application | mozilla | firefox | 3.0.18 | Yes |
| Application | mozilla | firefox | 3.0.19 | Yes |
| Application | mozilla | firefox | 3.5 | Yes |
| Application | mozilla | firefox | 3.5.1 | Yes |
| Application | mozilla | firefox | 3.5.2 | Yes |
| Application | mozilla | firefox | 3.5.3 | Yes |
| Application | mozilla | firefox | 3.5.4 | Yes |
| Application | mozilla | firefox | 3.5.5 | Yes |
| Application | mozilla | firefox | 3.5.6 | Yes |
| Application | mozilla | firefox | 3.5.7 | Yes |
| Application | mozilla | firefox | 3.5.8 | Yes |
| Application | mozilla | firefox | 3.5.9 | Yes |
| Application | mozilla | firefox | 3.5.10 | Yes |
| Application | mozilla | firefox | 3.5.11 | Yes |
| Application | mozilla | firefox | 3.5.12 | Yes |
| Application | mozilla | firefox | 3.5.13 | Yes |
| Application | mozilla | firefox | 3.5.14 | Yes |
| Application | mozilla | firefox | 3.5.15 | Yes |
| Application | mozilla | firefox | 3.5.16 | Yes |
| Application | mozilla | firefox | 3.5.17 | Yes |
| Application | mozilla | firefox | 3.5.18 | Yes |
| Application | mozilla | firefox | 3.5.19 | Yes |
| Application | mozilla | firefox | 3.6 | Yes |
| Application | mozilla | firefox | 3.6.2 | Yes |
| Application | mozilla | firefox | 3.6.3 | Yes |
| Application | mozilla | firefox | 3.6.4 | Yes |
| Application | mozilla | firefox | 3.6.6 | Yes |
| Application | mozilla | firefox | 3.6.7 | Yes |
| Application | mozilla | firefox | 3.6.8 | Yes |
| Application | mozilla | firefox | 3.6.9 | Yes |
| Application | mozilla | firefox | 3.6.10 | Yes |
| Application | mozilla | firefox | 3.6.11 | Yes |
| Application | mozilla | firefox | 3.6.12 | Yes |
| Application | mozilla | firefox | 3.6.13 | Yes |
| Application | mozilla | firefox | 3.6.14 | Yes |
| Application | mozilla | firefox | 3.6.15 | Yes |
| Application | mozilla | firefox | 3.6.16 | Yes |
| Application | mozilla | firefox | 3.6.17 | Yes |
| Application | mozilla | firefox | 3.6.18 | Yes |
| Application | mozilla | firefox | 3.6.19 | Yes |
| Application | mozilla | firefox | 3.6.20 | Yes |
| Application | mozilla | firefox | 3.6.21 | Yes |
| Application | mozilla | firefox | 3.6.22 | Yes |
| Application | mozilla | firefox | 3.6.23 | Yes |
| Application | mozilla | firefox | 3.6.24 | Yes |
| Application | mozilla | firefox | 3.6.25 | Yes |
| Application | mozilla | firefox | 3.6.26 | Yes |
| Application | mozilla | firefox | 3.6.27 | Yes |
| Application | mozilla | firefox | 3.6.28 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0 | Yes |
| Application | mozilla | firefox | 4.0.1 | Yes |
| Application | mozilla | firefox | 5.0 | Yes |
| Application | mozilla | firefox | 5.0.1 | Yes |
| Application | mozilla | firefox | 6.0 | Yes |
| Application | mozilla | firefox | 6.0.1 | Yes |
| Application | mozilla | firefox | 6.0.2 | Yes |
| Application | mozilla | firefox | 7.0 | Yes |
| Application | mozilla | firefox | 7.0.1 | Yes |
| Application | mozilla | firefox | 8.0 | Yes |
| Application | mozilla | firefox | 8.0.1 | Yes |
| Application | mozilla | firefox | 9.0 | Yes |
| Application | mozilla | firefox | 9.0.1 | Yes |
| Application | mozilla | firefox | 10.0 | Yes |
| Application | mozilla | firefox | 10.0.1 | Yes |
| Application | mozilla | firefox | 10.0.2 | Yes |
| Application | mozilla | firefox | 10.0.3 | Yes |
| Application | mozilla | firefox | 10.0.4 | Yes |
| Application | mozilla | firefox | 10.0.5 | Yes |
| Application | mozilla | firefox | 10.0.6 | Yes |
| Application | mozilla | firefox | 10.0.7 | Yes |
| Application | mozilla | firefox | 10.0.8 | Yes |
| Application | mozilla | firefox | 10.0.9 | Yes |
| Application | mozilla | firefox | 10.0.10 | Yes |
| Application | mozilla | firefox | 10.0.11 | Yes |
| Application | mozilla | firefox | 10.0.12 | Yes |
| Application | mozilla | firefox | 11.0 | Yes |
| Application | mozilla | firefox | 12.0 | Yes |
| Application | mozilla | firefox | 12.0 | Yes |
| Application | mozilla | firefox | 13.0 | Yes |
| Application | mozilla | firefox | 13.0.1 | Yes |
| Application | mozilla | firefox | 14.0 | Yes |
| Application | mozilla | firefox | 14.0.1 | Yes |
| Application | mozilla | firefox | 15.0 | Yes |
| Application | mozilla | firefox | 15.0.1 | Yes |
| Application | mozilla | firefox | 16.0 | Yes |
| Application | mozilla | firefox | 16.0.1 | Yes |
| Application | mozilla | firefox | 16.0.2 | Yes |
| Application | mozilla | firefox | 17.0 | Yes |
| Application | mozilla | firefox | 17.0.1 | Yes |
| Application | mozilla | firefox | 17.0.2 | Yes |
| Application | mozilla | firefox | 17.0.3 | Yes |
| Application | mozilla | firefox | 17.0.4 | Yes |
| Application | mozilla | firefox | 17.0.5 | Yes |
| Application | mozilla | firefox | 17.0.6 | Yes |
| Application | mozilla | firefox | 17.0.7 | Yes |
| Application | mozilla | firefox | 17.0.8 | Yes |
| Application | mozilla | firefox | 17.0.9 | Yes |
| Application | mozilla | firefox | 17.0.10 | Yes |
| Application | mozilla | firefox | 17.0.11 | Yes |
| Application | mozilla | firefox | 18.0 | Yes |
| Application | mozilla | firefox | 18.0.1 | Yes |
| Application | mozilla | firefox | 18.0.2 | Yes |
| Application | mozilla | firefox | 19.0 | Yes |
| Application | mozilla | firefox | 19.0.1 | Yes |
| Application | mozilla | firefox | 19.0.2 | Yes |
| Application | mozilla | firefox | 20.0 | Yes |
| Application | mozilla | firefox | 20.0.1 | Yes |
| Application | mozilla | firefox | 21.0 | Yes |
| Application | mozilla | firefox | 22.0 | Yes |
| Application | mozilla | firefox | 23.0 | Yes |
| Application | mozilla | firefox | 23.0.1 | Yes |
| Application | mozilla | firefox | 24.0 | Yes |
| Application | mozilla | firefox | 24.1 | Yes |
| Application | mozilla | firefox | 24.1.1 | Yes |
| Application | mozilla | firefox | 25.0 | Yes |
| Application | mozilla | firefox | 25.0.1 | Yes |
| Application | mozilla | firefox | 26.0 | Yes |
| Application | mozilla | firefox | 27.0 | Yes |
| Application | mozilla | firefox | 27.0.1 | Yes |
| Application | mozilla | firefox | 28.0 | Yes |
| Application | mozilla | firefox | 29.0 | Yes |
| Application | mozilla | firefox | 29.0.1 | Yes |
| Application | mozilla | firefox | 30.0 | Yes |
| Application | mozilla | firefox | 31.0 | Yes |
| Application | mozilla | firefox | 31.1.0 | Yes |
| Application | mozilla | firefox | 32.0 | Yes |
| Application | mozilla | firefox | 33.0 | Yes |
| Application | mozilla | firefox | 34.0.5 | Yes |