CVE-2015-2721 : Detail

CVE-2015-2721

A02-Cryptographic Failures
0.61%V4
Network
2015-07-05
23h00 +00:00
2018-01-04
18h57 +00:00
CVE.org
NVD
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CVE Descriptions

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.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-310 Category : Cryptographic Issues
Weaknesses in this category are related to the design and implementation of data confidentiality and integrity. Frequently these deal with the use of encoding techniques, encryption libraries, and hashing algorithms. The weaknesses in this category could lead to a degradation of the quality data if they are not addressed.

Metrics

Metrics Score Severity CVSS Vector Source
V2 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N nvd@nist.gov

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Products Mentioned

Configuraton 0

Novell>>Suse_linux_enterprise_software_development_kit >> Version 12.0

Canonical>>Ubuntu_linux >> Version 12.04

Canonical>>Ubuntu_linux >> Version 14.04

Canonical>>Ubuntu_linux >> Version 14.10

Canonical>>Ubuntu_linux >> Version 15.04

Debian>>Debian_linux >> Version 7.0

Debian>>Debian_linux >> Version 8.0

Novell>>Suse_linux_enterprise_desktop >> Version 12.0

Novell>>Suse_linux_enterprise_server >> Version 11

Novell>>Suse_linux_enterprise_server >> Version 12.0

Configuraton 0

Mozilla>>Network_security_services >> Version 3.19

Mozilla>>Firefox >> Version To (including) 38.1.0

Mozilla>>Firefox >> Version 31.0

Mozilla>>Firefox >> Version 31.1.0

Mozilla>>Firefox >> Version 31.1.1

Mozilla>>Firefox >> Version 31.3.0

Mozilla>>Firefox >> Version 31.5.1

Mozilla>>Firefox >> Version 31.5.2

Mozilla>>Firefox >> Version 31.5.3

Mozilla>>Firefox >> Version 38.0

Mozilla>>Firefox_esr >> Version 31.1

Mozilla>>Firefox_esr >> Version 31.2

Mozilla>>Firefox_esr >> Version 31.3

Mozilla>>Firefox_esr >> Version 31.4

Mozilla>>Firefox_esr >> Version 31.5

Mozilla>>Firefox_esr >> Version 31.6.0

Mozilla>>Firefox_esr >> Version 31.7.0

Mozilla>>Thunderbird >> Version To (including) 38.0.1

Configuraton 0

Oracle>>Solaris >> Version 11.3

Oracle>>Vm_server >> Version 3.2

References

http://www.securityfocus.com/bid/83398
Tags : vdb-entry, x_refsource_BID
https://security.gentoo.org/glsa/201512-10
Tags : vendor-advisory, x_refsource_GENTOO
https://security.gentoo.org/glsa/201701-46
Tags : vendor-advisory, x_refsource_GENTOO
http://www.debian.org/security/2015/dsa-3336
Tags : vendor-advisory, x_refsource_DEBIAN
http://www.securityfocus.com/bid/75541
Tags : vdb-entry, x_refsource_BID
http://rhn.redhat.com/errata/RHSA-2015-1185.html
Tags : vendor-advisory, x_refsource_REDHAT
http://www.debian.org/security/2015/dsa-3324
Tags : vendor-advisory, x_refsource_DEBIAN
http://www.ubuntu.com/usn/USN-2672-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.ubuntu.com/usn/USN-2673-1
Tags : vendor-advisory, x_refsource_UBUNTU
http://www.securitytracker.com/id/1032784
Tags : vdb-entry, x_refsource_SECTRACK
http://www.securityfocus.com/bid/91787
Tags : vdb-entry, x_refsource_BID
http://rhn.redhat.com/errata/RHSA-2015-1664.html
Tags : vendor-advisory, x_refsource_REDHAT
http://www.ubuntu.com/usn/USN-2656-1
Tags : vendor-advisory, x_refsource_UBUNTU
https://smacktls.com
Tags : x_refsource_MISC
http://www.securitytracker.com/id/1032783
Tags : vdb-entry, x_refsource_SECTRACK
http://www.ubuntu.com/usn/USN-2656-2
Tags : vendor-advisory, x_refsource_UBUNTU
The information presented on CVE Find originates from several carefully selected reference sources. CVE data is provided by MITRE Corporation and the National Vulnerability Database (NVD). The Known Exploited Vulnerabilities (KEV) catalog is sourced from the Cybersecurity and Infrastructure Security Agency (CISA), while EPSS scores come from FIRST.org. Additionally, data regarding software weaknesses (CWE) and common attack patterns (CAPEC) is maintained by MITRE Corporation, and information on hardware and software configurations (CPE) is provided by the NVD.