N/A - USN-2555-1

Executive Summary

Summary
Title	Libgcrypt vulnerabilities

Informations
Name	USN-2555-1	First vendor Publication	2015-04-01
Vendor	Ubuntu	Last vendor Modification	2015-04-01
Severity (Vendor)	N/A	Revision	N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	Not Defined	Attack Range	Not Defined
Cvss Impact Score	Not Defined	Attack Complexity	Not Defined
Cvss Expoit Score	Not Defined	Authentication	Not Defined
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 14.10 - Ubuntu 14.04 LTS - Ubuntu 12.04 LTS - Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in Libgcrypt.

Software Description: - libgcrypt11: LGPL Crypto library - libgcrypt20: LGPL Crypto library

Details:

Daniel Genkin, Lev Pachmanov, Itamar Pipman, and Eran Tromer discovered that Libgcrypt was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys. (CVE-2014-3591)

Daniel Genkin, Adi Shamir, and Eran Tromer discovered that Libgcrypt was susceptible to an attack via physical side channels. A local attacker could use this attack to possibly recover private keys. (CVE-2015-0837)

Update instructions:

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

Ubuntu 14.10:
libgcrypt11 1.5.4-2ubuntu1.1
libgcrypt20 1.6.1-2ubuntu1.14.10.1

Ubuntu 14.04 LTS:
libgcrypt11 1.5.3-2ubuntu4.2

Ubuntu 12.04 LTS:
libgcrypt11 1.5.0-3ubuntu0.4

Ubuntu 10.04 LTS:
libgcrypt11 1.4.4-5ubuntu2.4

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

References:
http://www.ubuntu.com/usn/usn-2555-1
CVE-2014-3591, CVE-2015-0837

Package Information:
https://launchpad.net/ubuntu/+source/libgcrypt11/1.5.4-2ubuntu1.1
https://launchpad.net/ubuntu/+source/libgcrypt20/1.6.1-2ubuntu1.14.10.1
https://launchpad.net/ubuntu/+source/libgcrypt11/1.5.3-2ubuntu4.2
https://launchpad.net/ubuntu/+source/libgcrypt11/1.5.0-3ubuntu0.4
https://launchpad.net/ubuntu/+source/libgcrypt11/1.4.4-5ubuntu2.4