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USN-3029-1: NSS vulnerability

11 July 2016

NSS could be made to crash or run programs if it processed specially crafted network traffic.

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Releases

Packages

  • nss - Network Security Service library

Details

Tyson Smith and Jed Davis discovered that NSS incorrectly handled memory. A
remote attacker could use this issue to cause NSS to crash, resulting in a
denial of service, or possibly execute arbitrary code.

This update refreshes the NSS package to version 3.23 which includes
the latest CA certificate bundle. As a security improvement, this update
also modifies NSS behaviour to reject DH key sizes below 1024 bits,
preventing a possible downgrade attack.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 16.04
Ubuntu 15.10
Ubuntu 14.04
Ubuntu 12.04

This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use NSS, such as Evolution and Chromium, to make all the necessary
changes.

References

Related notices

  • USN-2993-1: firefox-locale-pt, firefox-locale-be, firefox-locale-an, firefox-locale-ta, firefox-locale-bn, firefox-locale-hy, firefox-locale-et, firefox-locale-cs, firefox-locale-ro, firefox-locale-th, firefox-locale-si, firefox-locale-br, firefox-locale-zh-hant, firefox-locale-lt, firefox-locale-id, firefox-locale-az, firefox-locale-fy, firefox-locale-gd, firefox-locale-lv, firefox-locale-tr, firefox-locale-bg, firefox-locale-sq, firefox-locale-af, firefox-locale-sr, firefox-locale-ja, firefox-locale-uz, firefox-locale-mai, firefox-locale-is, firefox-locale-or, firefox-locale-ka, firefox-locale-el, firefox-locale-da, firefox-locale-fi, firefox-locale-pa, firefox-locale-he, firefox-locale-ru, firefox-locale-km, firefox-locale-vi, firefox-locale-sw, firefox-locale-mk, firefox-locale-cak, firefox-locale-csb, firefox-locale-ko, firefox-locale-mr, firefox-locale-nb, firefox-locale-pl, firefox-locale-kn, firefox-locale-nn, firefox-locale-bs, firefox-mozsymbols, firefox-locale-zu, firefox-locale-gl, firefox-locale-ca, firefox-globalmenu, firefox-locale-te, firefox-locale-nl, firefox-locale-ku, firefox-locale-en, firefox-locale-eo, firefox-locale-kk, firefox-locale-fa, firefox-dev, firefox-locale-de, firefox-locale-es, firefox-locale-xh, firefox-testsuite, firefox-locale-gn, firefox-locale-uk, firefox-locale-it, firefox-locale-hu, firefox-locale-cy, firefox-locale-ml, firefox-locale-as, firefox-locale-gu, firefox-locale-zh-hans, firefox-locale-eu, firefox-locale-fr, firefox-locale-ms, firefox-locale-mn, firefox-locale-sk, firefox-locale-sl, firefox-locale-ar, firefox-locale-hi, firefox-locale-oc, firefox-locale-hsb, firefox-locale-sv, firefox-locale-ga, firefox-locale-nso, firefox-locale-hr, firefox-locale-lg, firefox-locale-ast, firefox