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Ubuntu Security Notice USN-3628-2

Ubuntu Security Notice USN-3628-2
Posted Apr 19, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3628-2 - USN-3628-1 fixed a vulnerability in OpenSSL. This update provides the corresponding update for Ubuntu 12.04 ESM. Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA key generation. An attacker could possibly use this issue to perform a cache-timing attack and recover private RSA keys. Various other issues were also addressed.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2018-0737
MD5 | d51441eb31e08b9b0e00243556d85ee3

Ubuntu Security Notice USN-3628-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3628-2
April 19, 2018

openssl vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

OpenSSL could allow access to sensitve information.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools

Details:

USN-3628-1 fixed a vulnerability in OpenSSL. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia and Luis
Manuel Alvarez Tapia discovered that OpenSSL incorrectly handled RSA
key generation. An attacker could possibly use this issue to perform a
cache-timing attack and recover private RSA keys.

Update instructions:

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

Ubuntu 12.04 ESM:
libssl1.0.0 1.0.1-4ubuntu5.41

After a standard system update you need to reboot your computer to make
all the necessary changes.

References:
https://usn.ubuntu.com/usn/usn-3628-2
https://usn.ubuntu.com/usn/usn-3628-1
CVE-2018-0737

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