USN-3347-2: Libgcrypt vulnerability

Ubuntu Security Notice USN-3347-2

17th July, 2017

libgcrypt11 vulnerability

A security issue affects these releases of Ubuntu and its
derivatives:

• Ubuntu 12.04 LTS

Summary

Several security issues were fixed in Libgcrypt.

Software description

• libgcrypt11
  - LGPL Crypto library
  
  

Details

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. (

.

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

References

CVE-2017-7526