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.
CVSS Details
- CVSS 3.1 Base Score: 5.9
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade nss | Aug 30, 2017 | Jul 5, 2015 |
| Centos_linux | — | Upgrade nss-util-develUpgrade nss-sysinitUpgrade nss-develUpgrade nss-toolsUpgrade nss-utilUpgrade nssUpgrade nss-pkcs11-devel | Dec 1, 2016 | Jul 5, 2015 |
| Debian | — | Upgrade iceweaselUpgrade nssUpgrade icedove | Jul 30, 2024 | Jul 6, 2015 |
| Freebsd | — | Upgrade linux-firefoxUpgrade firefoxUpgrade thunderbirdUpgrade libxulUpgrade seamonkeyUpgrade firefox-esrUpgrade linux-seamonkeyUpgrade linux-thunderbird | Dec 10, 2025 | Jul 16, 2015 |
| Gentoo Linux | — | Upgrade www-client/firefox.Upgrade dev-libs/nspr.Upgrade dev-libs/nss.Upgrade www-client/firefox-bin.Upgrade mail-client/thunderbird.Upgrade mail-client/thunderbird-bin. | Oct 30, 2017 | Jul 5, 2015 |
| Mfsa2015 71 | — | Upgrade to the latest version of Mozilla FirefoxUpgrade to Mozilla Firefox ESR version 38.1Upgrade to Mozilla Firefox ESR version 31.8Upgrade to Mozilla Firefox version 39.0 | Jul 8, 2015 | Jul 5, 2015 |
| Mozilla Seamonkey | — | Upgrade to Mozilla SeaMonkey version 2.35.0 | Oct 22, 2015 | Jul 5, 2015 |
| Mozilla Thunderbird | — | Upgrade to Mozilla Thunderbird version 31.8Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 38.1 | Sep 14, 2015 | Jul 5, 2015 |
| Oracle Solaris | — | Upgrade web/browser/firefox to version 38.4.0-0.175.3.8.0.2.0 on Solaris 11.3Upgrade entire to version 0.5.11-0.175.3.0.0.30.0 on Solaris 11.3Upgrade consolidation/desktop/desktop-incorporation to version 0.5.11-0.175.3.0.0.28.0 on Solaris 11.3Upgrade database/sqlite-3 to version 3.9.2-0.175.3.8.0.2.0 on Solaris 11.3Upgrade runtime/tcl-8/tcl-sqlite-3 to version 3.9.2-0.175.3.8.0.2.0 on Solaris 11.3Upgrade database/sqlite-3/documentation to version 3.9.2-0.175.3.8.0.2.0 on Solaris 11.3 | May 29, 2017 | Jul 5, 2015 |
| Oracle_linux | — | Upgrade nss-develUpgrade nss-pkcs11-develUpgrade nssUpgrade nss-tools | Oct 16, 2024 | Jul 6, 2015 |
| Suse | — | Upgrade mozilla-nss-x86Upgrade mozilla-nspr-x86Upgrade MozillaThunderbird-debugsourceUpgrade mozilla-nspr-develUpgrade mozilla-nss-sysinit-x86Upgrade libsoftokn3-32bitUpgrade mozilla-nss-certs-x86Upgrade firefox-gcc47Upgrade mozilla-nss-toolsUpgrade mozilla-nss-tools-debuginfoUpgrade mozilla-nss-certs-debuginfoUpgrade mozilla-nss-debuginfoUpgrade MozillaFirefoxUpgrade mozilla-nss-debuginfo-x86Upgrade firefox-libstdc++6Upgrade mozilla-nss-sysinit-debuginfoUpgrade libsoftokn3-hmacUpgrade mozilla-nss-develUpgrade MozillaThunderbird-translations-otherUpgrade MozillaFirefox-translations-otherUpgrade MozillaThunderbird-develUpgrade libsoftokn3Upgrade mozilla-nss-certs-debuginfo-32bitUpgrade mozilla-nss-32bitUpgrade MozillaThunderbird-translations-commonUpgrade libfreebl3-debuginfoUpgrade mozilla-nss-certs-debuginfo-x86Upgrade libsoftokn3-hmac-32bitUpgrade libfreebl3-hmac-32bitUpgrade libfreebl3-debuginfo-x86Upgrade libfreebl3-32bitUpgrade mozilla-nss-debugsourceUpgrade libsoftokn3-debuginfo-x86Upgrade mozilla-nss-sysinit-debuginfo-x86Upgrade MozillaFirefox-translations-commonUpgrade mozilla-nss-sysinit-debuginfo-32bitUpgrade MozillaFirefox-debugsourceUpgrade libfreebl3-debuginfo-32bitUpgrade libfreebl3-x86Upgrade mozilla-nsprUpgrade libfreebl3Upgrade mozilla-nss-certsUpgrade mozillafirefox-buildsymbolsUpgrade mozilla-nss-debuginfo-32bitUpgrade mozilla-nspr-debugsourceUpgrade mozilla-nss-certs-32bitUpgrade libfreebl3-hmacUpgrade mozilla-nspr-32bitUpgrade MozillaThunderbird-debuginfoUpgrade libsoftokn3-debuginfoUpgrade mozilla-nspr-debuginfo-x86Upgrade MozillaThunderbird-buildsymbolsUpgrade libsoftokn3-x86Upgrade MozillaFirefox-branding-SLEDUpgrade MozillaFirefox-develUpgrade MozillaFirefox-translationsUpgrade mozilla-nss-sysinit-32bitUpgrade mozilla-nssUpgrade MozillaFirefox-debuginfoUpgrade mozillafirefox-branding-upstreamUpgrade firefox-libgcc_s1Upgrade mozilla-nss-sysinitUpgrade mozilla-nspr-debuginfoUpgrade mozilla-nspr-debuginfo-32bitUpgrade libsoftokn3-debuginfo-32bitUpgrade MozillaThunderbird | May 11, 2016 | Jul 5, 2015 |
| Ubuntu | — | Upgrade firefoxUpgrade thunderbirdUpgrade libnss3 | Nov 8, 2024 | Jul 6, 2015 |
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