CVE-2015-0832
(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.
Does this matter?
Lower severity and a low EPSS score (1.05%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
- EPSS
- 1.05% probability · 62th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-254
- Affected
- opensuse/opensuse · canonical/ubuntu linux · mozilla/firefox
- Source
- security@mozilla.org
References
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00000.html
- http://lists.opensuse.org/opensuse-updates/2015-03/msg00067.html
- http://www.mozilla.org/security/announce/2015/mfsa2015-13.htmlVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.securityfocus.com/bid/72752
- http://www.ubuntu.com/usn/USN-2505-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1065909
- https://security.gentoo.org/glsa/201504-01
- http://lists.opensuse.org/opensuse-security-announce/2015-03/msg00000.html
- http://lists.opensuse.org/opensuse-updates/2015-03/msg00067.html
- http://www.mozilla.org/security/announce/2015/mfsa2015-13.htmlVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.securityfocus.com/bid/72752
- http://www.ubuntu.com/usn/USN-2505-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1065909
- https://security.gentoo.org/glsa/201504-01
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.