#VU32555 Input validation error in Mozilla NSS
Vulnerability identifier: #VU32555
Vulnerability risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Mozilla NSS
Universal components / Libraries /
Libraries used by multiple products
Vendor: Mozilla
Description
The vulnerability allows a remote non-authenticated attacker to manipulate data.
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.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Mozilla NSS: 3.13.4 - 3.52.1
External links
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
http://bugzilla.mozilla.org/show_bug.cgi?id=903885
http://bugzilla.redhat.com/show_bug.cgi?id=1079851
http://developer.mozilla.org/en-US/docs/NSS/NSS_3.16_release_notes
http://hg.mozilla.org/projects/nss/rev/709d4e597979
http://security.gentoo.org/glsa/201504-01
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
