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AUSCERT External Security Bulletin Redistribution
ESB-2017.1562
NSS vulnerability
22 June 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: libnss3
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-7502
Reference: ESB-2017.1557
ESB-2017.1404
ESB-2017.1368
ESB-2017.1367
Original Bulletin:
http://www.ubuntu.com/usn/usn-3336-1
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Ubuntu Security Notice USN-3336-1
June 21, 2017
nss vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 17.04
- - Ubuntu 16.10
- - Ubuntu 16.04 LTS
- - Ubuntu 14.04 LTS
Summary:
NSS could be made to crash if it received specially crafted network
traffic.
Software Description:
- - nss: Network Security Service library
Details:
It was discovered that NSS incorrectly handled certain empty SSLv2
messages. A remote attacker could possibly use this issue to cause NSS to
crash, resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
libnss3 2:3.28.4-0ubuntu0.17.04.2
Ubuntu 16.10:
libnss3 2:3.28.4-0ubuntu0.16.10.2
Ubuntu 16.04 LTS:
libnss3 2:3.28.4-0ubuntu0.16.04.2
Ubuntu 14.04 LTS:
libnss3 2:3.28.4-0ubuntu0.14.04.2
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-3336-1
CVE-2017-7502
Package Information:
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.17.04.2
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.10.2
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.16.04.2
https://launchpad.net/ubuntu/+source/nss/2:3.28.4-0ubuntu0.14.04.2
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===========================================================================
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===========================================================================
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