==========================================================================
Ubuntu Security Notice USN-3431-1
October 02, 2017
nss vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 17.04
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
NSS could be made to crash or run programs if it received specially crafted
network traffic.
Software Description:
– nss: Network Security Service library
Details:
Martin Thomson discovered that NSS incorrectly generated handshake hashes.
A remote attacker could use this issue to cause NSS to crash, resulting in
a denial of service, or possibly execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
libnss3 2:3.28.4-0ubuntu0.17.04.3
Ubuntu 16.04 LTS:
libnss3 2:3.28.4-0ubuntu0.16.04.3
Ubuntu 14.04 LTS:
libnss3 2:3.28.4-0ubuntu0.14.04.3
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:
https://www.ubuntu.com/usn/usn-3431-1
CVE-2017-7805
Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.17.04.3
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.3
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.14.04.3
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