[USN-3733-2] GnuPG vulnerability
Leonidas S. Barbosa
leo.barbosa at canonical.com
Wed Aug 15 17:20:50 UTC 2018
==========================================================================
Ubuntu Security Notice USN-3733-2
August 15, 2018
gnupg vulnerability
==========================================================================
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:
gnupg 1.4.11-3ubuntu2.12
gnupg-curl 1.4.11-3ubuntu2.12
gpgv 1.4.11-3ubuntu2.12
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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