USN-2865-1: GnuTLS vulnerability

08 January 2016

GnuTLS could be made to expose sensitive information over the network.

Releases

Packages

Details

Karthikeyan Bhargavan and Gaetan Leurent discovered that GnuTLS incorrectly
allowed MD5 to be used for TLS 1.2 connections. If a remote attacker were
able to perform a man-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 15.04
Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.

References

Related notices

  • USN-2863-1: libssl1.0.0, openssl
  • USN-2864-1: libnss3-dev, libnss3-nssdb, libnss3-1d, nss, libnss3, libnss3-tools
  • USN-2866-1: firefox-locale-ga, firefox, firefox-locale-mai, firefox-locale-or, firefox-locale-sk, firefox-locale-lv, firefox-locale-ms, firefox-locale-pa, firefox-locale-ja, firefox-locale-hr, firefox-locale-vi, firefox-locale-el, firefox-locale-hy, firefox-locale-cs, firefox-locale-nb, firefox-locale-pl, firefox-locale-as, firefox-locale-az, firefox-globalmenu, firefox-locale-br, firefox-locale-en, firefox-locale-eo, firefox-locale-hsb, firefox-locale-fr, firefox-locale-ca, firefox-dev, firefox-locale-pt, firefox-locale-si, firefox-locale-sq, firefox-mozsymbols, firefox-locale-et, firefox-locale-sv, firefox-locale-mn, firefox-locale-it, firefox-locale-ko, firefox-locale-nso, firefox-locale-kk, firefox-locale-km, firefox-locale-ar, firefox-locale-uz, firefox-locale-bg, firefox-locale-cy, firefox-locale-kn, firefox-locale-hu, firefox-locale-he, firefox-locale-an, firefox-locale-gu, firefox-locale-nn, firefox-locale-tr, firefox-locale-nl, firefox-locale-sw, firefox-locale-zu, firefox-locale-af, firefox-locale-fa, firefox-locale-eu, firefox-locale-hi, firefox-locale-id, firefox-locale-lg, firefox-locale-lt, firefox-locale-sr, firefox-locale-uk, firefox-locale-de, firefox-locale-is, firefox-locale-fi, firefox-locale-bs, firefox-locale-ta, firefox-locale-zh-hant, firefox-locale-ast, firefox-locale-csb, firefox-locale-gl, firefox-locale-xh, firefox-locale-da, firefox-locale-zh-hans, firefox-locale-be, firefox-locale-ro, firefox-locale-gd, firefox-locale-mr, firefox-locale-ml, firefox-locale-sl, firefox-locale-bn, firefox-locale-ka, firefox-locale-fy, firefox-locale-oc, firefox-locale-te, firefox-locale-th, firefox-testsuite, firefox-locale-es, firefox-locale-ku, firefox-locale-ru, firefox-locale-mk
  • USN-2884-1: openjdk-7-jre-headless, openjdk-7-source, openjdk-7-doc, icedtea-7-jre-jamvm, openjdk-7, openjdk-7-jre, openjdk-7-jre-lib, openjdk-7-jdk, openjdk-7-jre-zero, openjdk-7-demo
  • USN-2904-1: thunderbird-locale-sk, thunderbird-locale-sl, thunderbird-locale-fi, thunderbird-locale-ast, thunderbird-locale-ga-ie, thunderbird-locale-fy-nl, thunderbird-locale-ko, thunderbird-locale-af, thunderbird-locale-da, thunderbird-locale-es-ar, thunderbird-locale-fr, thunderbird-locale-en-gb, thunderbird-locale-it, thunderbird-locale-uk, thunderbird-locale-zh-hant, thunderbird-locale-nn, thunderbird-locale-vi, thunderbird-dev, xul-ext-calendar-timezones, thunderbird-locale-ar, thunderbird-locale-et, thunderbird-locale-gl, thunderbird-locale-pl, thunderbird-locale-sv-se, thunderbird-locale-lt, thunderbird-locale-nn-no, thunderbird-locale-ca, thunderbird-locale-ro, thunderbird-locale-be, thunderbird-locale-nl, thunderbird-locale-hu, thunderbird-locale-sr, thunderbird-locale-ka, thunderbird-testsuite, thunderbird-locale-sq, thunderbird-locale-he, thunderbird-locale-pt, thunderbird-locale-el, thunderbird-locale-nb-no, thunderbird-locale-cy, thunderbird-locale-cs, thunderbird-locale-fy, thunderbird-locale-zh-hans, thunderbird-mozsymbols, thunderbird-locale-br, thunderbird-locale-hsb, thunderbird-globalmenu, xul-ext-lightning, thunderbird-locale-eu, thunderbird-locale-pt-pt, thunderbird-locale-zh-cn, thunderbird-locale-en-us, thunderbird-locale-rm, thunderbird-locale-bg, thunderbird-locale-ja, thunderbird-locale-ta, thunderbird-locale-es-es, thunderbird-locale-sv, thunderbird-locale-zh-tw, thunderbird-locale-mk, xul-ext-gdata-provider, thunderbird-locale-hy, thunderbird-locale-es, thunderbird-locale-bn-bd, thunderbird-locale-is, thunderbird-locale-en, thunderbird-locale-pa, thunderbird-locale-ru, thunderbird-locale-hr, thunderbird-gnome-support, thunderbird-locale-id, thunderbird-locale-gd, thunderbird, thunderbird-locale-dsb, thunderbird-locale-si, thunderbird-locale-ta-lk, thunderbird-locale-nb, thunderbird-locale-pt-br, thunderbird-locale-ga, thunderbird-locale-pa-in, thunderbird-locale-tr, thunderbird-locale-de, thunderbird-locale-bn