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Vulnerability Details : CVE-2015-2721

Mozilla Network Security Services (NSS) before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle attackers to defeat cryptographic protection mechanisms by blocking messages, as demonstrated by removing a forward-secrecy property by blocking a ServerKeyExchange message, aka a "SMACK SKIP-TLS" issue.
Publish Date : 2015-07-05 Last Update Date : 2018-01-04
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- CVSS Scores & Vulnerability Types

CVSS Score
4.3
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s)
CWE ID 310

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2015:1185: nss security update (Moderate) oval:com.redhat.rhsa:def:20151185 unix
RHSA-2015:1664: nss security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20151664 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2015-2721

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 ~~lts~~~ Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 ~~lts~~~ Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 14.10 Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 15.04 Version Details Vulnerabilities
5 OS Debian Debian Linux 7.0 Version Details Vulnerabilities
6 OS Debian Debian Linux 8.0 Version Details Vulnerabilities
7 Application Mozilla Network Security Services 3.19 Version Details Vulnerabilities
8 OS Novell Suse Linux Enterprise Desktop 12.0 Version Details Vulnerabilities
9 OS Novell Suse Linux Enterprise Server 11 SP4 Version Details Vulnerabilities
10 OS Novell Suse Linux Enterprise Server 12.0 Version Details Vulnerabilities
11 OS Novell Suse Linux Enterprise Software Development Kit 12.0 Version Details Vulnerabilities
12 OS Oracle Solaris 11.3 Version Details Vulnerabilities
13 OS Oracle Vm Server 3.2 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 4
Debian Debian Linux 2
Mozilla Network Security Services 1
Novell Suse Linux Enterprise Desktop 1
Novell Suse Linux Enterprise Server 2
Novell Suse Linux Enterprise Software Development Kit 1
Oracle Solaris 1
Oracle Vm Server 1

- References For CVE-2015-2721

http://www.securityfocus.com/bid/83398
BID 83398 Mozilla Network Security Services CVE-2015-2721 Security Bypass Vulnerability Release Date:2016-07-29
https://smacktls.com
https://security.gentoo.org/glsa/201701-46
GENTOO GLSA-201701-46
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19_release_notes CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html
SUSE SUSE-SU-2015:1268
http://www.ubuntu.com/usn/USN-2672-1
UBUNTU USN-2672-1
http://www.ubuntu.com/usn/USN-2673-1
UBUNTU USN-2673-1
https://bugzilla.mozilla.org/show_bug.cgi?id=1086145 CONFIRM
http://www.ubuntu.com/usn/USN-2656-2
UBUNTU USN-2656-2
http://www.securitytracker.com/id/1032783
SECTRACK 1032783
http://www.securitytracker.com/id/1032784
SECTRACK 1032784
http://www.securityfocus.com/bid/75541
BID 75541 Mozilla Firefox/Thunderbird Multiple Security Vulnerabilities Release Date:2015-08-20
https://security.gentoo.org/glsa/201512-10
GENTOO GLSA-201512-10
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
SUSE openSUSE-SU-2015:1266
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html CONFIRM
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html CONFIRM
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html CONFIRM
http://www.ubuntu.com/usn/USN-2656-1
UBUNTU USN-2656-1
http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html CONFIRM
http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html CONFIRM
http://www.mozilla.org/security/announce/2015/mfsa2015-71.html CONFIRM
http://www.debian.org/security/2015/dsa-3336
DEBIAN DSA-3336
http://www.debian.org/security/2015/dsa-3324
DEBIAN DSA-3324
http://rhn.redhat.com/errata/RHSA-2015-1664.html
REDHAT RHSA-2015:1664
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html
SUSE SUSE-SU-2015:1269
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
SUSE SUSE-SU-2015:1449
http://rhn.redhat.com/errata/RHSA-2015-1185.html
REDHAT RHSA-2015:1185
http://www.securityfocus.com/bid/91787
BID 91787 Oracle July 2016 Critical Patch Update Multiple Vulnerabilities Release Date:2016-10-10
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html
SUSE openSUSE-SU-2015:1229

- Vulnerability Conditions

Vulnerability is valid if product versions listed below are used TOGETHER WITH(AND)

- Metasploit Modules Related To CVE-2015-2721

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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