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-pkcs11-develUpgrade nssUpgrade nss-utilUpgrade nss-develUpgrade nss-sysinitUpgrade nss-util-develUpgrade nss-tools | Dec 1, 2016 | Jul 5, 2015 |
| Debian | — | Upgrade iceweaselUpgrade nssUpgrade icedove | Jul 30, 2024 | Jul 6, 2015 |
| Freebsd | — | Upgrade firefox-esrUpgrade linux-thunderbirdUpgrade linux-seamonkeyUpgrade firefoxUpgrade linux-firefoxUpgrade seamonkeyUpgrade thunderbirdUpgrade libxul | Dec 10, 2025 | Jul 16, 2015 |
| Gentoo Linux | — | Upgrade mail-client/thunderbird-bin.Upgrade mail-client/thunderbird.Upgrade www-client/firefox-bin.Upgrade dev-libs/nss.Upgrade www-client/firefox.Upgrade dev-libs/nspr. | 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 38.1Upgrade to the latest version of Mozilla ThunderbirdUpgrade to Mozilla Thunderbird version 31.8 | Sep 14, 2015 | Jul 5, 2015 |
| Oracle Solaris | — | Upgrade 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 web/browser/firefox to version 38.4.0-0.175.3.8.0.2.0 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 MozillaFirefox-branding-SLEDUpgrade mozillafirefox-branding-upstreamUpgrade mozilla-nss-sysinit-32bitUpgrade libsoftokn3-debuginfoUpgrade mozilla-nspr-32bitUpgrade mozilla-nsprUpgrade MozillaThunderbird-debuginfoUpgrade mozilla-nss-sysinit-debuginfo-32bitUpgrade MozillaFirefox-develUpgrade mozilla-nss-debuginfo-32bitUpgrade mozilla-nspr-debugsourceUpgrade mozilla-nss-sysinitUpgrade MozillaThunderbird-buildsymbolsUpgrade libfreebl3-debuginfo-32bitUpgrade libsoftokn3-debuginfo-32bitUpgrade libfreebl3-hmacUpgrade mozillafirefox-buildsymbolsUpgrade mozilla-nspr-debuginfo-x86Upgrade mozilla-nspr-debuginfoUpgrade MozillaFirefox-debugsourceUpgrade libsoftokn3-x86Upgrade mozilla-nssUpgrade mozilla-nss-certs-32bitUpgrade MozillaFirefox-debuginfoUpgrade mozilla-nspr-debuginfo-32bitUpgrade libfreebl3-x86Upgrade mozilla-nss-certsUpgrade MozillaThunderbirdUpgrade MozillaFirefox-translationsUpgrade libfreebl3Upgrade firefox-libgcc_s1Upgrade mozilla-nss-tools-debuginfoUpgrade MozillaFirefox-translations-commonUpgrade mozilla-nspr-develUpgrade mozilla-nss-32bitUpgrade mozilla-nss-sysinit-debuginfo-x86Upgrade libsoftokn3-hmacUpgrade mozilla-nss-certs-debuginfo-32bitUpgrade mozilla-nss-x86Upgrade mozilla-nss-certs-debuginfoUpgrade MozillaFirefoxUpgrade mozilla-nss-debuginfoUpgrade mozilla-nss-debuginfo-x86Upgrade mozilla-nss-certs-x86Upgrade libsoftokn3-debuginfo-x86Upgrade MozillaThunderbird-develUpgrade MozillaThunderbird-translations-otherUpgrade MozillaThunderbird-debugsourceUpgrade mozilla-nss-toolsUpgrade libfreebl3-debuginfo-x86Upgrade libfreebl3-hmac-32bitUpgrade libsoftokn3Upgrade MozillaFirefox-translations-otherUpgrade libfreebl3-debuginfoUpgrade mozilla-nss-certs-debuginfo-x86Upgrade firefox-libstdc++6Upgrade mozilla-nss-sysinit-debuginfoUpgrade mozilla-nss-sysinit-x86Upgrade MozillaThunderbird-translations-commonUpgrade mozilla-nss-develUpgrade libfreebl3-32bitUpgrade libsoftokn3-hmac-32bitUpgrade firefox-gcc47Upgrade mozilla-nss-debugsourceUpgrade libsoftokn3-32bitUpgrade mozilla-nspr-x86 | May 11, 2016 | Jul 5, 2015 |
| Ubuntu | — | Upgrade thunderbirdUpgrade firefoxUpgrade libnss3 | Nov 8, 2024 | Jul 6, 2015 |
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