CVE-2014-1492
The cert_TestHostName function in lib/certdb/certdb.c in the certificate-checking implementation in Mozilla Network Security Services (NSS) before 3.16 accepts a wildcard character that is embedded in an internationalized domain name's U-label, which…
Does this matter?
Lower severity and a low EPSS score (1.75%). Track it; it rarely justifies an emergency change on its own.
Description
The cert_TestHostName function in lib/certdb/certdb.c in the certificate-checking implementation in Mozilla Network Security Services (NSS) before 3.16 accepts a wildcard character that is embedded in an internationalized domain name's U-label, which might allow man-in-the-middle attackers to spoof SSL servers via a crafted certificate.
- CVSS 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
- EPSS
- 1.75% probability · 78th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- mozilla/network security services
- Source
- security@mozilla.org
EPSS 1.8% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132437.html
- http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00006.html
- http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00015.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00010.html
- http://lists.opensuse.org/opensuse-updates/2014-05/msg00033.html
- http://seclists.org/fulldisclosure/2014/Dec/23
- http://secunia.com/advisories/59866
- http://secunia.com/advisories/60621
- http://secunia.com/advisories/60794
- http://www.debian.org/security/2014/dsa-2994
- http://www.mozilla.org/security/announce/2014/mfsa2014-45.html
- http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
- http://www.oracle.com/technetwork/topics/security/cpuoct2014-1972960.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/archive/1/534161/100/0/threaded
- http://www.securityfocus.com/bid/66356
- http://www.ubuntu.com/usn/USN-2159-1
- http://www.ubuntu.com/usn/USN-2185-1
- http://www.vmware.com/security/advisories/VMSA-2014-0012.html
- https://bugzilla.mozilla.org/show_bug.cgi?id=903885
- https://bugzilla.redhat.com/show_bug.cgi?id=1079851
- https://developer.mozilla.org/en-US/docs/NSS/NSS_3.16_release_notes
- https://hg.mozilla.org/projects/nss/rev/709d4e597979Exploit, Patch
- https://security.gentoo.org/glsa/201504-01
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761
- http://lists.fedoraproject.org/pipermail/package-announce/2014-May/132437.html
- http://lists.opensuse.org/opensuse-security-announce/2014-05/msg00006.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.