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==========================================================================
Ubuntu Security Notice USN-2897-1
February 15, 2016

nettle vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 15.10
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in Nettle.

Software Description:
- nettle: low level cryptographic library (public-key cryptos)

Details:

Hanno Böck discovered that Nettle incorrectly handled carry propagation in
the NIST P-256 elliptic curve. (CVE-2015-8803)

Hanno Böck discovered that Nettle incorrectly handled carry propagation in
the NIST P-384 elliptic curve. (CVE-2015-8804)

Niels Moeller discovered that Nettle incorrectly handled carry propagation
in the NIST P-256 elliptic curve. (CVE-2015-8805)

Update instructions:

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

Ubuntu 15.10:
  libnettle6                      3.1.1-4ubuntu0.1

Ubuntu 14.04 LTS:
  libnettle4                      2.7.1-1ubuntu0.1

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

References:
  http://www.ubuntu.com/usn/usn-2897-1
  CVE-2015-8803, CVE-2015-8804, CVE-2015-8805

Package Information:
  https://launchpad.net/ubuntu/+source/nettle/3.1.1-4ubuntu0.1
  https://launchpad.net/ubuntu/+source/nettle/2.7.1-1ubuntu0.1



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