CVEvulnerability

CVE-2015-2721

4.3 MEDIUM Published 2015-07-06 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2015-07-06
Last modified
2026-06-17
Assigner
[email protected]
CVSS 2.0 ([email protected])
4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
Weaknesses
CWE-310

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.

Affected configurations

• novell suse linux enterprise software development kit 12.0 • canonical ubuntu linux 12.04 • canonical ubuntu linux 14.04 • canonical ubuntu linux 14.10 • canonical ubuntu linux 15.04 • debian debian linux 7.0 • debian debian linux 8.0 • novell suse linux enterprise desktop 12.0 • novell suse linux enterprise server 11 • novell suse linux enterprise server 12.0 • mozilla network security services 3.19 • oracle solaris 11.3 • oracle vm server 3.2

Related

Weakness · not in database (1)

References