CVE-2015-2721

N/A
Published: July 6, 2015 at 01:00 AM UTC
Updated: June 17, 2026 at 12:24 AM UTC
11 products affected across 5 vendorsDebian LinuxUbuntu LinuxSolaris

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Severity
N/A
Exploit prediction
EPSS 3%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

CVSS

Confidentiality
NONE
Integrity
PARTIAL
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-310

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