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AUSCERT External Security Bulletin Redistribution
ESB-2018.2284
GnuPG vulnerability
8 August 2018
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: gnupg
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-7526
Reference: ASB-2017.0219
ESB-2017.2550
ESB-2017.2201
ESB-2017.1671
ESB-2017.1659
Original Bulletin:
http://www.ubuntu.com/usn/usn-3733-1
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Ubuntu Security Notice USN-3733-1
August 07, 2018
gnupg vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- - - Ubuntu 16.04 LTS
- - - Ubuntu 14.04 LTS
Summary:
GnuPG could be made to expose sensitive information.
Software Description:
- - - gnupg: GNU privacy guard - a free PGP replacement
Details:
Daniel J. Bernstein, Joachim Breitner, Daniel Genkin, Leon Groot Bruinderink,
Nadia Heninger, Tanja Lange, Christine van Vredendaal, and Yuval Yarom
discovered that GnuPG is vulnerable to a cache side-channel attack. A local
attacker could use this attack to recover RSA private keys.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 LTS:
gnupg 1.4.20-1ubuntu3.3
gnupg-curl 1.4.20-1ubuntu3.3
gpgv 1.4.20-1ubuntu3.3
Ubuntu 14.04 LTS:
gnupg 1.4.16-1ubuntu2.6
gnupg-curl 1.4.16-1ubuntu2.6
gpgv 1.4.16-1ubuntu2.6
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3733-1
CVE-2017-7526, https://launchpad.net/bugs/1785176
Package Information:
https://launchpad.net/ubuntu/+source/gnupg/1.4.20-1ubuntu3.3
https://launchpad.net/ubuntu/+source/gnupg/1.4.16-1ubuntu2.6
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