USN-2865-1: GnuTLS vulnerability

Releases

• Ubuntu 15.04
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• gnutls26 - GNU TLS library
• gnutls28 - GNU TLS library

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 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 15.04

• libgnutls-deb0-28 - 3.3.8-3ubuntu3.2
• libgnutls-openssl27 - 3.3.8-3ubuntu3.2
• libgnutlsxx28 - 3.3.8-3ubuntu3.2

Ubuntu 14.04

• libgnutls-openssl27 - 2.12.23-12ubuntu2.4
• libgnutls26 - 2.12.23-12ubuntu2.4
• libgnutlsxx27 - 2.12.23-12ubuntu2.4

Ubuntu 12.04

• libgnutls-openssl27 - 2.12.14-5ubuntu3.11
• libgnutls26 - 2.12.14-5ubuntu3.11
• libgnutlsxx27 - 2.12.14-5ubuntu3.11

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

References

• CVE-2015-7575

Related notices

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