CVE-2015-0832

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2015-02-25 · updated 2026-06-17
Weakness: CWE-254

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

Canonical Ubuntu Linux: 12.04, 14.04, 14.10
Mozilla Firefox: through 35.0.1; 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 (+225)
Opensuse: 13.1, 13.2

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.html
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.html
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html

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