Description
Mozilla Network Security Services (NSS) before 3.20.2, as used in Mozilla Firefox before 43.0.2 and Firefox ESR 38.x before 38.5.2, does not reject MD5 signatures in Server Key Exchange messages in TLS 1.2 Handshake Protocol traffic, which makes it easier for man-in-the-middle attackers to spoof servers by triggering a collision.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gnutls28 | 3.3.15-1 | — |
| Debian 14 | nss | 2:3.21-1 | — |
| Debian 14 | openssl | 1.0.1f-1 | — |
| Debian 13 | gnutls28 | 3.3.15-1 | — |
| Debian 13 | nss | 2:3.21-1 | — |
| Debian 13 | openssl | 1.0.1f-1 | — |
| Debian 12 | gnutls28 | 3.3.15-1 | — |
| Debian 12 | nss | 2:3.21-1 | — |
| Debian 12 | openssl | 1.0.1f-1 | — |
| Debian 8 | icedove | 38.6.0-1~deb8u1 | DSA-3491-1 |
| Debian 8 | iceweasel | 38.6.0esr-1~deb8u1 | DSA-3457-1 |
| Debian 8 | nss | 2:3.26-1+debu8u1 | DSA-3688-1 |
| Debian 8 | openjdk-7 | 7u95-2.6.4-1~deb8u1 | DSA-3458-1 |
| Debian 7 | gnutls26 | 2.12.20-8+deb7u5 | DSA-3437-1 |
| Debian 7 | icedove | 38.6.0-1~deb7u1 | DSA-3491-1 |
| Debian 7 | iceweasel | 38.6.0esr-1~deb7u1 | DSA-3457-1 |
| Debian 7 | openjdk-6 | 6b38-1.13.10-1~deb7u1 | DSA-3465-1 |
| Debian 7 | openjdk-7 | 7u95-2.6.4-1~deb7u1 | DSA-3458-1 |
| Debian 7 | openssl | 1.0.1e-2+deb7u19 | DSA-3436-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 6.0 | openjdk-6 | 6b38-1.13.10-1~deb6u1 | DLA-410-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | thunderbird | 1:38.6.0+build1-0ubuntu1 | — |
| Ubuntu 14.04 LTS | firefox | 43.0.4+build3-0ubuntu0.14.04.1 | USN-2866-1 |
| Ubuntu 14.04 LTS | gnutls26 | 2.12.23-12ubuntu2.4 | USN-2865-1 |
| Ubuntu 14.04 LTS | nss | 2:3.19.2.1-0ubuntu0.14.04.2 | USN-2864-1 |
| Ubuntu 14.04 LTS | openjdk-6 | 6b38-1.13.10-0ubuntu0.14.04.1 | — |
| Ubuntu 14.04 LTS | openjdk-7 | 7u95-2.6.4-0ubuntu0.14.04.1 | USN-2884-1 |
| Ubuntu 14.04 LTS | thunderbird | 1:38.6.0+build1-0ubuntu0.14.04.1 | USN-2904-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | gnutls +4 | 3.3.8-14.el7_2 | RHSA-2016:0012 |
| RHEL 7 | java-1.7.0-openjdk +6 | 1:1.7.0.95-2.6.4.0.el7_2 | RHSA-2016:0054 |
| RHEL 7 | java-1.7.1-ibm +5 | 1:1.7.1.3.30-1jpp.1.el7 | RHSA-2016:0099 |
| RHEL 7 | java-1.8.0-ibm +5 | 1:1.8.0.2.10-1jpp.1.el7 | RHSA-2016:0098 |
| RHEL 7 | java-1.8.0-openjdk +13 | 1:1.8.0.71-2.b15.el7_2 | RHSA-2016:0049 |
| RHEL 7 | nss +4 | 3.19.1-19.el7_2 | RHSA-2016:0007 |
| RHEL 7 | openssl +4 | 1:1.0.1e-51.el7_2.2 | RHSA-2016:0008 |
| RHEL 6 | gnutls +3 | 2.8.5-19.el6_7 | RHSA-2016:0012 |
| RHEL 6 | java-1.6.0-ibm +6 | 1:1.6.0.16.20-1jpp.1.el6_7 | RHSA-2016:0101 |
| RHEL 6 | java-1.7.0-openjdk +4 | 1:1.7.0.95-2.6.4.0.el6_7 | RHSA-2016:0053 |
| RHEL 6 | java-1.7.1-ibm +5 | 1:1.7.1.3.30-1jpp.2.el6_7 | RHSA-2016:0099 |
| RHEL 6 | java-1.8.0-openjdk +11 | 1:1.8.0.71-1.b15.el6_7 | RHSA-2016:0050 |
| RHEL 6 | nss +4 | 3.19.1-8.el6_7 | RHSA-2016:0007 |
| RHEL 6 | openssl +3 | 1.0.1e-42.el6_7.2 | RHSA-2016:0008 |
| RHEL 5 | java-1.6.0-ibm +7 | 1:1.6.0.16.20-1jpp.1.el5 | RHSA-2016:0101 |
| RHEL 5 | java-1.7.0-ibm +5 | 1:1.7.0.9.30-1jpp.1.el5 | RHSA-2016:0100 |
| RHEL 5 | java-1.7.0-openjdk +4 | 1:1.7.0.95-2.6.4.1.el5_11 | RHSA-2016:0054 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Extras Oracle Java 7 | java-1.7.0-oracle +5 | 1:1.7.0.95-1jpp.2.el7 | RHSA-2016:0056 |
| Red Hat Rhel Extras Oracle Java 7 | java-1.8.0-oracle +5 | 1:1.8.0.71-1jpp.1.el7 | RHSA-2016:0055 |
| Red Hat Rhel Extras Oracle Java 6 | java-1.7.0-oracle +5 | 1:1.7.0.95-1jpp.1.el6_7 | RHSA-2016:0056 |
| Red Hat Rhel Extras Oracle Java 6 | java-1.8.0-oracle +5 | 1:1.8.0.71-1jpp.1.el6_7 | RHSA-2016:0055 |
| Red Hat Rhel Extras Oracle Java 5 | java-1.7.0-oracle +5 | 1:1.7.0.95-1jpp.1.el5_11 | RHSA-2016:0056 |
| Red Hat Network Satellite 5 | java-1.7.0-ibm +1 | 1:1.7.0.9.40-1jpp.1.el5 | RHSA-2016:1430 |
| Red Hat Network Satellite 5 | java-1.7.1-ibm +1 | 1:1.7.1.3.40-1jpp.1.el6_7 | RHSA-2016:1430 |
| Red Hat Network Satellite 5 | spacewalk-java +5 | 2.0.2-109.el5sat | RHSA-2016:1430 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | java-1_7_0-openjdk | 1.7.0.95-24.2 | SUSE-SU-2016:0265-1 |
| SLES 12 SP1 | java-1_7_1-ibm | 1.7.1_sr3.30-21.1 | SUSE-SU-2016:0401-1 |
| SLES 12 SP1 | java-1_8_0-ibm | 1.8.0_sr2.10-7.1 | SUSE-SU-2016:0390-1 |
| SLES 12 SP1 | java-1_8_0-openjdk | 1.8.0.72-3.2 | SUSE-SU-2016:0256-1 |
| SLES 12 SP1 | mozilla-nss | 3.19.2.2-32.1 | SUSE-SU-2016:0149-1 |
| SLES 12 | java-1_6_0-ibm | 1.6.0_sr16.20-30.1 | SUSE-SU-2016:0428-1 |
| SLES 12 | java-1_7_0-openjdk | 1.7.0.95-24.2 | SUSE-SU-2016:0265-1 |
| SLES 12 | java-1_7_1-ibm | 1.7.1_sr3.30-21.1 | SUSE-SU-2016:0401-1 |
| SLES 12 | mozilla-nss | 3.19.2.2-32.1 | SUSE-SU-2016:0149-1 |
| SLES 11 SP4 | java-1_7_0-openjdk | 1.7.0.95-0.17.2 | SUSE-SU-2016:0269-1 |
| SLES 11 SP4 | java-1_7_1-ibm | 1.7.1_sr3.30-9.1 | SUSE-SU-2016:0399-1 |
| SLES 11 SP4 | mozilla-nss | 3.19.2.2-22.1 | SUSE-SU-2016:0189-1 |
| SLES 11 SP3 | java-1_6_0-ibm | 1.6.0_sr16.20-51.1 | SUSE-SU-2016:0770-1 |
| SLES 11 SP3 | java-1_7_0-ibm | 1.7.0_sr9.30-47.1 | SUSE-SU-2016:0636-1 |
| SLES 11 SP3 | java-1_7_0-openjdk | 1.7.0.95-0.17.2 | SUSE-SU-2016:0269-1 |
| SLES 11 SP3 | mozilla-nss | 3.19.2.2-22.1 | SUSE-SU-2016:0189-1 |
| SLES 11 SP2 | MozillaFirefox | 38.6.1esr-33.1 | SUSE-SU-2016:0584-1 |
| SLES 11 SP2 | MozillaFirefox-branding-SLED | 38-15.58 | SUSE-SU-2016:0584-1 |
| SLES 11 SP2 | java-1_6_0-ibm | 1.6.0_sr16.20-49.1 | SUSE-SU-2016:0431-1 |
| SLES 11 SP2 | java-1_7_0-ibm | 1.7.0_sr9.30-45.1 | SUSE-SU-2016:0433-1 |
| SLES 11 SP2 | mozilla-nss | 3.20.2-17.5 | SUSE-SU-2016:0584-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | java-1_7_0-openjdk | 1.7.0.95-24.2 | SUSE-SU-2016:0265-1 |
| SLES for SAP 12 SP1 | java-1_7_1-ibm | 1.7.1_sr3.30-21.1 | SUSE-SU-2016:0401-1 |
| SLES for SAP 12 SP1 | java-1_8_0-ibm | 1.8.0_sr2.10-7.1 | SUSE-SU-2016:0390-1 |
| SLES for SAP 12 SP1 | java-1_8_0-openjdk | 1.8.0.72-3.2 | SUSE-SU-2016:0256-1 |
| SLES for SAP 12 SP1 | mozilla-nss | 3.19.2.2-32.1 | SUSE-SU-2016:0149-1 |
| SLES for SAP 12 | java-1_7_0-openjdk | 1.7.0.95-24.2 | SUSE-SU-2016:0265-1 |
| SLES for SAP 12 | java-1_7_1-ibm | 1.7.1_sr3.30-21.1 | SUSE-SU-2016:0401-1 |
| SLES for SAP 12 | mozilla-nss | 3.19.2.2-32.1 | SUSE-SU-2016:0149-1 |
| SLES for SAP 11 SP4 | java-1_7_1-ibm | 1.7.1_sr3.30-9.1 | SUSE-SU-2016:0399-1 |
| SLES for SAP 11 SP4 | mozilla-nss | 3.19.2.2-22.1 | SUSE-SU-2016:0189-1 |
| SLES for SAP 11 SP3 | mozilla-nss | 3.19.2.2-22.1 | SUSE-SU-2016:0189-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 50.1.0-1.1 | openSUSE-SU-2024:10071-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 45.5.1-1.1 | openSUSE-SU-2024:10230-1 |
| openSUSE Tumbleweed | bouncycastle | 1.54-1.2 | openSUSE-SU-2024:10486-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Tumbleweed | java-1_7_0-openjdk | 1.7.0.121-1.1 | openSUSE-SU-2024:10534-1 |
| openSUSE Tumbleweed | java-1_8_0-openjdk | 1.8.0.111-1.1 | openSUSE-SU-2024:10197-1 |
| openSUSE Tumbleweed | mbedtls | 2.4.0-1.2 | openSUSE-SU-2024:10088-1 |
| openSUSE Tumbleweed | mbedtls-2 | 2.28.3-1.1 | openSUSE-SU-2024:12903-1 |
| openSUSE Tumbleweed | mbedtls-3 | 3.6.6-1.1 | openSUSE-SU-2026:11119-1 |
| openSUSE Tumbleweed | mozilla-nss | 3.26.2-1.1 | openSUSE-SU-2024:10451-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | gnutls +4 | 3.3.8-14.el7_2 | ELSA-2016-0012 |
| Oracle Linux 7 | gnutls-guile | 2.8.5-19.el6_7 | ELSA-2016-0012 |
| Oracle Linux 7 | java-1.7.0-openjdk +4 | 1:1.7.0.95-2.6.4.1.0.1.el5_11 | ELSA-2016-0054 |
| Oracle Linux 7 | java-1.7.0-openjdk-headless +1 | 1:1.7.0.95-2.6.4.0.0.1.el7_2 | ELSA-2016-0054 |
| Oracle Linux 7 | java-1.8.0-openjdk +13 | 1:1.8.0.71-2.b15.el7_2 | ELSA-2016-0049 |
| Oracle Linux 7 | nss +4 | 3.19.1-19.0.1.el7_2 | ELSA-2016-0007 |
| Oracle Linux 7 | openssl +4 | 1:1.0.1e-51.el7_2.2 | ELSA-2016-0008 |
Advisories 50
- RHSA-2016:1430 Red Hat Security Advisory: java-1.7.0-ibm and java-1.7.1-ibm security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0101 Red Hat Security Advisory: java-1.6.0-ibm security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0099 Red Hat Security Advisory: java-1.7.1-ibm security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0100 Red Hat Security Advisory: java-1.7.0-ibm security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0098 Red Hat Security Advisory: java-1.8.0-ibm security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0056 Red Hat Security Advisory: java-1.7.0-oracle security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0054 Red Hat Security Advisory: java-1.7.0-openjdk security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0055 Red Hat Security Advisory: java-1.8.0-oracle security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0053 Red Hat Security Advisory: java-1.7.0-openjdk security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0050 Red Hat Security Advisory: java-1.8.0-openjdk security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0012 Red Hat Security Advisory: gnutls security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0049 Red Hat Security Advisory: java-1.8.0-openjdk security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0008 Red Hat Security Advisory: openssl security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- RHSA-2016:0007 Red Hat Security Advisory: nss security update Red Hat Security Advisories (RHSA) · Aug 5, 2026
- openSUSE-SU-2026:11119-1 libeverest-3.6.6-1.1 on GA media SUSE / openSUSE Security Updates · Jun 26, 2026
- USN-2904-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2864-1 nss vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2865-1 gnutls26, gnutls28 vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-2866-1 firefox vulnerability Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-3688-1 nss - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3436-1 openssl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3465-1 openjdk-6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3458-1 openjdk-7 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-410-1 openjdk-6 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3437-1 gnutls26 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3457-1 iceweasel - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3491-1 icedove - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-2884-1 openjdk-7 vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:10451-1 libfreebl3-3.26.2-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0428-1 Security update for java-1_6_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10230-1 MozillaThunderbird-45.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0770-1 Security update for java-1_6_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0149-1 Security update for mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10486-1 bouncycastle-1.54-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0390-1 Security update for java-1_8_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0584-1 Security update for MozillaFirefox, MozillaFirefox-branding-SLED, MozillaFirefox-branding-SLES-for-VMware, mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0189-1 Security update for mozilla-nss SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10088-1 libmbedcrypto0-2.4.0-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0399-1 Security update for java-1_7_1-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10534-1 java-1_7_0-openjdk-1.7.0.121-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0269-1 Security update for java-1_7_0-openjdk SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0265-1 Security update for java-1_7_0-openjdk SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0256-1 Security update for java-1_8_0-openjdk SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0431-1 Security update for java-1_6_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0433-1 Security update for java-1_7_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0401-1 Security update for java-1_7_1-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2016:0636-1 Security update for java-1_7_0-ibm SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:14572-1 firefox-esr-128.5.1-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10197-1 java-1_8_0-openjdk-1.8.0.111-1.1 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:12903-1 libmbedcrypto7-2.28.3-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- DSA-3688 vendor-advisory
- DSA-3457 vendor-advisory
- DSA-3491 vendor-advisory
- openSUSE-SU-2016:0272 vendor-advisory
- 1036467 vdb-entry
- GLSA-201701-46 vendor-advisory
- openSUSE-SU-2016:0279 vendor-advisory
- openSUSE-SU-2016:0161 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html
- USN-2884-1 vendor-advisory
- 79684 vdb-entry
- DSA-3465 vendor-advisory
- https://developer.mozilla.org/docs/Mozilla/Projects/NSS/NSS_3.20.2_release_notes
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- http://www.oracle.com/technetwork/topics/security/cpujan2016-2367955.html
- RHSA-2016:1430 vendor-advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1158489
- RHSA-2016:0049 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- openSUSE-SU-2016:0270 vendor-advisory
- openSUSE-SU-2016:0308 vendor-advisory
- DSA-3437 vendor-advisory
- RHSA-2016:0053 vendor-advisory
- USN-2904-1 vendor-advisory
- openSUSE-SU-2015:2405 vendor-advisory
- https://security.netapp.com/advisory/ntap-20160225-0001/
- SUSE-SU-2016:0269 vendor-advisory
- DSA-3436 vendor-advisory
- openSUSE-SU-2016:0263 vendor-advisory
- USN-2866-1 vendor-advisory
- SUSE-SU-2016:0256 vendor-advisory
- http://www.oracle.com/technetwork/security-advisory/cpuapr2016v3-2985753.html
- 91787 vdb-entry
- http://www.mozilla.org/security/announce/2015/mfsa2015-150.html
- RHSA-2016:0055 vendor-advisory
- GLSA-201801-15 vendor-advisory
- RHSA-2016:0054 vendor-advisory
- openSUSE-SU-2016:0488 vendor-advisory
- GLSA-201706-18 vendor-advisory
- USN-2864-1 vendor-advisory
- openSUSE-SU-2016:0162 vendor-advisory
- openSUSE-SU-2016:0605 vendor-advisory
- RHSA-2016:0056 vendor-advisory
- openSUSE-SU-2016:0268 vendor-advisory
- openSUSE-SU-2016:0307 vendor-advisory
- RHSA-2016:0050 vendor-advisory
- DSA-3458 vendor-advisory
- SUSE-SU-2016:0265 vendor-advisory
- USN-2865-1 vendor-advisory
- 1034541 vdb-entry
- openSUSE-SU-2016:0007 vendor-advisory
- USN-2863-1 vendor-advisory