==========================================================================
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

—–BEGIN PGP SIGNATURE—–
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=S0pT
—–END PGP SIGNATURE—–
—

==========================================================================
Ubuntu Security Notice USN-3692-2
June 26, 2018

openssl vulnerabilities
==========================================================================

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

– Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in OpenSSL.

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

Details:

USN-3692-1 fixed a vulnerability in OpenSSL. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory 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 12.04 ESM:
libssl1.0.0                     1.0.1-4ubuntu5.43

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

References:
https://usn.ubuntu.com/usn/usn-3692-2
https://usn.ubuntu.com/usn/usn-3692-1
CVE-2017-0737, CVE-2018-0495, CVE-2018-0732, CVE-2018-0737—–BEGIN PGP SIGNATURE—–
Version: GnuPG v2
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=d4c3
—–END PGP SIGNATURE—–
—