CVE-2015-2721 Details
Description
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No CVSS 3.x data is available for this CVE.
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-310 | Cryptographic Issues | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| novell suse linux enterprise software development kit | 12.0 |
CPE
Remediation
| |
| canonical ubuntu linux | 12.04 14.04 14.10 15.04 |
CPE
Remediation
| |
| debian debian linux | 7.0 8.0 |
CPE
Remediation
| |
| novell suse linux enterprise desktop | 12.0 |
CPE
Remediation
| |
| novell suse linux enterprise server | 11 sp4 12.0 |
CPE
Remediation
| |
| mozilla network security services | 3.19 |
CPE
Remediation
| |
| mozilla firefox | <= 38.1.0 31.0 31.1.0 31.1.1 31.3.0 31.5.1 31.5.2 31.5.3 38.0 |
CPE
Remediation
| |
| mozilla firefox esr | 31.1 31.2 31.3 31.4 31.5 31.6.0 31.7.0 |
CPE
Remediation
| |
| mozilla thunderbird | <= 38.0.1 |
CPE
Remediation
| |
| oracle solaris | 11.3 |
CPE
Remediation
| |
| oracle vm server | 3.2 |
CPE
Remediation
| |
Change History
32 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| May 6, 2026 | Status Change | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| Oct 22, 2024 | CPE Deprecation Remap | [email protected] |
| Oct 22, 2024 | CPE Deprecation Remap | [email protected] |
| Oct 21, 2024 | CPE Deprecation Remap | [email protected] |
| Oct 21, 2024 | CPE Deprecation Remap | [email protected] |
| Oct 21, 2024 | CPE Deprecation Remap | [email protected] |
| Oct 21, 2024 | CPE Deprecation Remap | [email protected] |
| Oct 21, 2024 | CPE Deprecation Remap | [email protected] |
| Oct 21, 2024 | CPE Deprecation Remap | [email protected] |
| May 14, 2024 | CVE Modified | [email protected] |
| Sep 12, 2023 | CPE Deprecation Remap | [email protected] |
| Jan 5, 2018 | CVE Modified | [email protected] |
| Jul 1, 2017 | CVE Modified | [email protected] |
| Dec 28, 2016 | CVE Modified | [email protected] |
| Dec 24, 2016 | CVE Modified | [email protected] |
| Dec 22, 2016 | CVE Modified | [email protected] |
| Dec 7, 2016 | CVE Modified | [email protected] |
| Nov 28, 2016 | CVE Modified | [email protected] |
| Oct 20, 2016 | Modified Analysis | [email protected] |
| Oct 20, 2016 | Initial Analysis | [email protected] |
| Oct 18, 2016 | CVE Modified | [email protected] |
| Oct 4, 2016 | CVE Modified | [email protected] |
| Sep 9, 2016 | CVE Modified | [email protected] |
| Aug 9, 2016 | CVE Modified | [email protected] |
| Jul 22, 2016 | CVE Modified | [email protected] |
| Apr 22, 2016 | CVE Modified | [email protected] |
| Sep 3, 2015 | Modified Analysis | [email protected] |
| Aug 26, 2015 | CVE Modified | [email protected] |
| Jul 8, 2015 | Modified Analysis | [email protected] |
| Jul 8, 2015 | Initial Analysis | [email protected] |