VDB
DEBIAN-CVE-2015-2721
DEBIAN-CVE-2015-2721
PUBLISHED
CVSS 8.699999809265137 HIGH
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.
Risk Scores
CVSS 4.0
8.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:14 | nss | 0, 0, 0 |
| Debian:13 | nss | 0, 0, 0 |
| Debian:12 | nss | 0, 0, 0 |
| Debian:11 | nss | 0, 0, 0 |
Timeline
- Jul 6, 2015 CVE Published
- Apr 28, 2026 CVE Updated