[USN-3692-1] OpenSSL vulnerabilities

-----BEGIN PGP SIGNATURE-----
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=S0pT
-----END PGP SIGNATURE-----
==========================================================================
Ubuntu Security Notice USN-3692-1
June 26, 2018

openssl, openssl1.0 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in OpenSSL.

Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools
- openssl1.0: Secure Socket Layer (SSL) cryptographic library and tools

Details:

Keegan Ryan discovered that OpenSSL incorrectly handled ECDSA key
generation. An attacker could possibly use this issue to perform a
cache-timing attack and recover private ECDSA keys. (CVE-2018-0495)

Guido Vranken discovered that OpenSSL incorrectly handled very large prime
values during a key agreement. A remote attacker could possibly use this
issue to consume resources, leading to a denial of service. (CVE-2018-0732)

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. (CVE-2018-0737)

Update instructions:

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

Ubuntu 18.04 LTS:
libssl1.0.0 1.0.2n-1ubuntu5.1
libssl1.1 1.1.0g-2ubuntu4.1

Ubuntu 17.10:
libssl1.0.0 1.0.2g-1ubuntu13.6

Ubuntu 16.04 LTS:
libssl1.0.0 1.0.2g-1ubuntu4.13

Ubuntu 14.04 LTS:
libssl1.0.0 1.0.1f-1ubuntu2.26

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

References:
https://usn.ubuntu.com/usn/usn-3692-1
CVE-2018-0495, CVE-2018-0732, CVE-2018-0737

Package Information:
https://launchpad.net/ubuntu/+source/openssl/1.1.0g-2ubuntu4.1
https://launchpad.net/ubuntu/+source/openssl1.0/1.0.2n-1ubuntu5.1
https://launchpad.net/ubuntu/+source/openssl/1.0.2g-1ubuntu13.6
https://launchpad.net/ubuntu/+source/openssl/1.0.2g-1ubuntu4.13
https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.26