CVE-2015-2721
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 2:3.19.1-1 |
| debian | bullseye | fixed | 2:3.19.1-1 |
| debian | forky | fixed | 2:3.19.1-1 |
| debian | sid | fixed | 2:3.19.1-1 |
| debian | trixie | fixed | 2:3.19.1-1 |
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
| ubuntu | 14.10 | affected | |
| ubuntu | 15.04 | affected | |
| debian | 7.0 | affected | |
| debian | 8.0 | affected | |
| suse | 11 | affected | |
| suse | 12.0 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| novell | suse_linux_enterprise_software_development_kit | 12.0 | |
| mozilla | network_security_services | 3.19 | |
| mozilla | firefox | {"endIncluding":"38.1.0"} | |
| mozilla | firefox | 31.0 | |
| mozilla | firefox | 31.1.0 | |
| mozilla | firefox | 31.1.1 | |
| mozilla | firefox | 31.3.0 | |
| mozilla | firefox | 31.5.1 | |
| mozilla | firefox | 31.5.2 | |
| mozilla | firefox | 31.5.3 | |
| mozilla | firefox | 38.0 | |
| mozilla | firefox_esr | 31.1 | |
| mozilla | firefox_esr | 31.2 | |
| mozilla | firefox_esr | 31.3 | |
| mozilla | firefox_esr | 31.4 | |
| mozilla | firefox_esr | 31.5 | |
| mozilla | firefox_esr | 31.6.0 | |
| mozilla | firefox_esr | 31.7.0 | |
| mozilla | thunderbird | {"endIncluding":"38.0.1"} | |
References
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html
- http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
- http://rhn.redhat.com/errata/RHSA-2015-1185.html
- http://rhn.redhat.com/errata/RHSA-2015-1664.html
- http://www.debian.org/security/2015/dsa-3324
- http://www.debian.org/security/2015/dsa-3336
- http://www.mozilla.org/security/announce/2015/mfsa2015-71.html
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/75541
- http://www.securityfocus.com/bid/83398
- http://www.securityfocus.com/bid/91787
- http://www.securitytracker.com/id/1032783
- http://www.securitytracker.com/id/1032784
- http://www.ubuntu.com/usn/USN-2656-1
- http://www.ubuntu.com/usn/USN-2656-2
- http://www.ubuntu.com/usn/USN-2672-1
- http://www.ubuntu.com/usn/USN-2673-1
- https://bugzilla.mozilla.org/show_bug.cgi?id=1086145
CWEs
CWE-310
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.