VDB
CVE-2015-2721
CVE-2015-2721
PUBLISHED
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.
EPSS 0.51% · 66.8th percentile
Risk Scores
EPSS Score
0.51%
66.8th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:14.04:LTS | firefox | 29.0+build1-0ubuntu0.14.04.2, *, * |
| Ubuntu:14.04:LTS | nss | *, 0, 2:3.15.1-1ubuntu1 |
| Ubuntu:14.04:LTS | thunderbird | 1:24.0+build1-0ubuntu1, 0, * |
Exploit Intelligence
- https://bugzilla.mozilla.org/show_bug.cgi?id=1086145 (vulncheck-nvd)
Timeline
- Jul 5, 2015 CVE Published
- Feb 4, 2022 EPSS Score
- Mar 29, 2022 EPSS Score
- May 20, 2022 EPSS Score
- Jul 12, 2022 EPSS Score
- Oct 26, 2022 EPSS Score
- Dec 18, 2022 EPSS Score
- Feb 8, 2023 EPSS Score
- Mar 7, 2023 EPSS Score
- Apr 2, 2023 EPSS Score
- May 25, 2023 EPSS Score
- Jul 16, 2023 EPSS Score
References
- https://ubuntu.com/security/CVE-2015-2721 third-party-advisory
- https://www.mozilla.org/en-US/security/advisories/mfsa2015-71/ third-party-advisory
- https://smacktls.com third-party-advisory
- https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.19_release_notes third-party-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1086145 third-party-advisory
- http://www.mozilla.org/security/announce/2015/mfsa2015-71.html third-party-advisory
- https://ubuntu.com/security/notices/USN-2672-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-2656-1 vendor-advisory
- https://ubuntu.com/security/notices/USN-2656-2 vendor-advisory
- https://ubuntu.com/security/notices/USN-2673-1 vendor-advisory
- https://www.cve.org/CVERecord?id=CVE-2015-2721 third-party-advisory