USN-2866-1: Firefox vulnerability

Releases

• Ubuntu 15.10
• Ubuntu 15.04
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• firefox - Mozilla Open Source web browser

Details

Karthikeyan Bhargavan and Gaetan Leurent discovered that NSS incorrectly
allowed MD5 to be used for TLS 1.2 connections. If a remote attacker were
able to perform a machine-in-the-middle attack, this flaw could be exploited to
view sensitive information.

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 15.10

• firefox - 43.0.4+build3-0ubuntu0.15.10.1

Ubuntu 15.04

• firefox - 43.0.4+build3-0ubuntu0.15.04.1

Ubuntu 14.04

• firefox - 43.0.4+build3-0ubuntu0.14.04.1

Ubuntu 12.04

• firefox - 43.0.4+build3-0ubuntu0.12.04.1

After a standard system update you need to restart Firefox to make
all the necessary changes.

References

• CVE-2015-7575

Related notices

• USN-2904-1: thunderbird-locale-en, thunderbird-locale-sv, thunderbird-locale-ar, thunderbird-locale-tr, thunderbird-locale-pa, thunderbird-locale-gl, thunderbird-locale-it, thunderbird-testsuite, thunderbird-locale-fi, thunderbird-locale-af, thunderbird-locale-ru, thunderbird-locale-ga, thunderbird-locale-el, thunderbird-gnome-support, thunderbird-locale-nn, thunderbird-globalmenu, thunderbird-locale-sq, thunderbird-locale-bn-bd, thunderbird-mozsymbols, thunderbird-locale-ja, thunderbird-locale-zh-tw, xul-ext-lightning, thunderbird-locale-uk, thunderbird-locale-ro, thunderbird-locale-id, thunderbird-locale-pl, thunderbird-locale-nl, thunderbird-locale-hr, thunderbird-locale-zh-hant, thunderbird-locale-hy, thunderbird-locale-en-gb, thunderbird, thunderbird-locale-pa-in, thunderbird-locale-is, thunderbird-locale-dsb, thunderbird-locale-cs, thunderbird-locale-es, thunderbird-locale-de, thunderbird-locale-bg, thunderbird-locale-ga-ie, thunderbird-locale-ka, thunderbird-locale-he, thunderbird-locale-et, thunderbird-locale-es-ar, thunderbird-locale-ca, thunderbird-locale-vi, thunderbird-locale-es-es, thunderbird-locale-fy-nl, thunderbird-locale-pt-br, thunderbird-locale-ta, thunderbird-locale-zh-cn, xul-ext-gdata-provider, thunderbird-locale-ast, thunderbird-locale-cy, thunderbird-locale-sk, thunderbird-locale-en-us, thunderbird-locale-fy, thunderbird-locale-nn-no, thunderbird-locale-nb, thunderbird-locale-sl, thunderbird-locale-ko, thunderbird-locale-sv-se, thunderbird-locale-pt-pt, thunderbird-locale-ta-lk, thunderbird-locale-be, thunderbird-locale-nb-no, thunderbird-locale-bn, thunderbird-locale-fr, thunderbird-locale-br, thunderbird-locale-hu, thunderbird-locale-da, thunderbird-locale-mk, thunderbird-dev, thunderbird-locale-gd, thunderbird-locale-hsb, thunderbird-locale-pt, thunderbird-locale-lt, thunderbird-locale-si, thunderbird-locale-sr, thunderbird-locale-zh-hans, xul-ext-calendar-timezones, thunderbird-locale-eu, thunderbird-locale-rm
• USN-2863-1: libssl1.0.0, openssl
• USN-2865-1: gnutls26, libgnutls-openssl27, gnutls26-doc, libgnutlsxx27, libgnutls-deb0-28, libgnutls26, libgnutlsxx28, gnutls28, libgnutls-dev, gnutls-bin
• USN-2884-1: openjdk-7-jdk, openjdk-7-jre-lib, openjdk-7-jre-headless, openjdk-7-doc, icedtea-7-jre-jamvm, openjdk-7-jre, openjdk-7-jre-zero, openjdk-7-demo, openjdk-7, openjdk-7-source
• USN-2864-1: libnss3-dev, nss, libnss3-1d, libnss3-nssdb, libnss3, libnss3-tools