USN-4060-1: NSS vulnerabilities

Releases

• Ubuntu 19.04
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• nss - Network Security Service library

Details

Henry Corrigan-Gibbs discovered that NSS incorrectly handled importing
certain curve25519 private keys. An attacker could use this issue to cause
NSS to crash, resulting in a denial of service, or possibly obtain
sensitive information. (CVE-2019-11719)

Hubert Kario discovered that NSS incorrectly handled PKCS#1 v1.5 signatures
when using TLSv1.3. An attacker could possibly use this issue to trick NSS
into using PKCS#1 v1.5 signatures, contrary to expectations. This issue
only applied to Ubuntu 19.04. (CVE-2019-11727)

Jonas Allmann discovered that NSS incorrectly handled certain p256-ECDH
public keys. An attacker could possibly use this issue to cause NSS to
crash, resulting in a denial of service. (CVE-2019-11729)

Update instructions

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

Ubuntu 19.04

• libnss3 - 2:3.42-1ubuntu2.1

Ubuntu 18.04

• libnss3 - 2:3.35-2ubuntu2.3

Ubuntu 16.04

• libnss3 - 2:3.28.4-0ubuntu0.16.04.6

After a standard system update you need to restart any applications that
use NSS, such as Evolution, to make all the necessary changes.

References

• CVE-2019-11719
• CVE-2019-11727
• CVE-2019-11729

Related notices

• USN-4054-1: firefox-locale-fa, firefox-locale-oc, firefox-locale-sr, firefox-locale-it, firefox-locale-id, firefox-locale-vi, firefox-locale-gu, firefox-locale-be, firefox-locale-fy, firefox-locale-gn, firefox-dev, firefox-locale-mr, firefox-locale-pa, firefox, firefox-globalmenu, firefox-locale-ka, firefox-locale-ta, firefox-locale-sk, firefox-locale-sq, firefox-locale-uz, firefox-locale-bs, firefox-locale-lv, firefox-locale-zh-hant, firefox-locale-ja, firefox-locale-ca, firefox-locale-bg, firefox-locale-sw, firefox-locale-ku, firefox-locale-an, firefox-locale-el, firefox-locale-bn, firefox-locale-csb, firefox-locale-mai, firefox-geckodriver, firefox-locale-da, firefox-locale-ne, firefox-locale-is, firefox-locale-lt, firefox-locale-ms, firefox-locale-nso, firefox-locale-af, firefox-locale-lg, firefox-locale-th, firefox-locale-fi, firefox-locale-es, firefox-locale-pl, firefox-locale-eo, firefox-locale-mk, firefox-locale-sl, firefox-locale-hi, firefox-locale-de, firefox-locale-as, firefox-locale-nn, firefox-locale-ga, firefox-locale-te, firefox-locale-sv, firefox-locale-eu, firefox-locale-si, firefox-locale-zh-hans, firefox-mozsymbols, firefox-locale-uk, firefox-locale-az, firefox-locale-kn, firefox-locale-ml, firefox-locale-nb, firefox-locale-gl, firefox-locale-he, firefox-locale-ro, firefox-locale-or, firefox-locale-xh, firefox-locale-et, firefox-locale-ur, firefox-locale-br, firefox-locale-hu, firefox-locale-mn, firefox-locale-cak, firefox-locale-kk, firefox-locale-my, firefox-locale-ast, firefox-locale-hsb, firefox-locale-ia, firefox-locale-hr, firefox-locale-en, firefox-locale-tr, firefox-locale-km, firefox-locale-fr, firefox-locale-pt, firefox-locale-cy, firefox-locale-ar, firefox-locale-kab, firefox-locale-ko, firefox-locale-nl, firefox-locale-zu, firefox-locale-cs, firefox-locale-ru, firefox-locale-gd, firefox-locale-hy
• USN-4064-1: thunderbird-locale-pa, thunderbird-locale-kk, thunderbird-locale-kab, thunderbird-locale-dsb, thunderbird-locale-af, thunderbird-locale-ja, thunderbird-locale-de, thunderbird-locale-pt-pt, thunderbird-locale-ga, thunderbird-locale-tr, thunderbird-locale-uk, thunderbird-locale-id, thunderbird-locale-zh-cn, thunderbird-locale-en, thunderbird-locale-ka, thunderbird-locale-nn, thunderbird-locale-ca, thunderbird-locale-es-es, xul-ext-lightning, thunderbird-locale-sv-se, thunderbird-locale-ta, thunderbird-locale-mk, thunderbird-locale-es, thunderbird-locale-br, thunderbird-locale-sr, thunderbird-mozsymbols, thunderbird-locale-en-us, thunderbird-locale-bg, thunderbird-locale-ta-lk, thunderbird-locale-ms, thunderbird-locale-sq, thunderbird-gnome-support, thunderbird-locale-he, thunderbird-locale-nl, thunderbird-locale-rm, thunderbird-locale-fy, thunderbird-locale-ko, thunderbird-locale-da, thunderbird-locale-hsb, thunderbird-locale-es-ar, thunderbird-locale-cy, xul-ext-calendar-timezones, thunderbird-dev, thunderbird-locale-ga-ie, thunderbird-locale-pa-in, thunderbird-locale-et, xul-ext-gdata-provider, thunderbird-locale-fr, thunderbird-locale-ro, thunderbird-locale-it, thunderbird-locale-en-gb, thunderbird-locale-sv, thunderbird-locale-ar, thunderbird-locale-bn-bd, thunderbird-locale-cs, thunderbird-locale-si, thunderbird-locale-be, thunderbird-locale-nn-no, thunderbird-locale-gl, thunderbird-locale-hu, thunderbird-locale-pt-br, thunderbird-locale-bn, thunderbird-locale-fy-nl, thunderbird-locale-pl, thunderbird-locale-is, thunderbird-locale-lt, thunderbird-locale-nb, thunderbird-locale-zh-hans, thunderbird-locale-fi, thunderbird-locale-sl, thunderbird-locale-zh-hant, thunderbird-locale-zh-tw, thunderbird-globalmenu, thunderbird, thunderbird-locale-gd, thunderbird-locale-nb-no, thunderbird-locale-hr, thunderbird-locale-pt, thunderbird-locale-ru, thunderbird-locale-el, thunderbird-locale-eu, thunderbird-locale-hy, thunderbird-locale-ast, thunderbird-locale-sk, thunderbird-locale-vi
• USN-4060-2: libnss3-dev, nss, libnss3-1d, libnss3-nssdb, libnss3-tools, libnss3