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AUSCERT External Security Bulletin Redistribution
ESB-2018.2382
GnuPG vulnerability
16 August 2018
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AusCERT Security Bulletin Summary
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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-2017.2201
ESB-2017.1659
Original Bulletin:
http://www.ubuntu.com/usn/usn-3733-2
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Ubuntu Security Notice USN-3733-2
August 15, 2018
gnupg vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 12.04 ESM
Summary:
GnuPG could be made to expose sensitive information.
Software Description:
- - gnupg: GNU privacy guard - a free PGP replacement
Details:
USN-3733-1 fixed a vulnerability in GnuPG. This update provides
the corresponding update for Ubuntu 12.04 ESM.
Original advisory 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 12.04 ESM:
gnupg1.4.11-3ubuntu2.12
gnupg-curl1.4.11-3ubuntu2.12
gpgv1.4.11-3ubuntu2.12
In general, a standard system update will make all the necessary
changes.
References:
https://usn.ubuntu.com/usn/usn-3733-2
https://usn.ubuntu.com/usn/usn-3733-1
CVE-2017-7526
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