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USN-3347-2: Libgcrypt vulnerability

17 July 2017

Several security issues were fixed in Libgcrypt.




USN-3347-1 fixed a vulnerability in Libgcrypt. 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 Libgcrypt was susceptible to an attack via
side channels. A local attacker could use this attack to recover RSA
private keys. (CVE-2017-7526)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 12.04

In general, a standard system update will make all the necessary changes.


Related notices

  • USN-3733-1: gnupg-curl, gpgv, gpgv-udeb, gnupg, gnupg-udeb
  • USN-3733-2: gnupg, gnupg-curl, gpgv
  • USN-3347-1: libgcrypt11, libgcrypt11-udeb, libgcrypt20-dev, libgcrypt20-doc, libgcrypt20-udeb, libgcrypt20, libgcrypt11-dev, libgcrypt11-doc