USN-3628-1: OpenSSL vulnerability

Published Apr 19, 2018
·
Updated

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.

Affected Software

7 affected componentsFixes available
OpenSSL OpenSSL
All of the following
ubuntu/libssl1.0.0<1.0.2g-1ubuntu13.5
1.0.2g-1ubuntu13.5
Ubuntu Ubuntu=17.10
All of the following
ubuntu/libssl1.0.0<1.0.2g-1ubuntu4.12
1.0.2g-1ubuntu4.12
Ubuntu Ubuntu=16.04
All of the following
ubuntu/libssl1.0.0<1.0.1f-1ubuntu2.25
1.0.1f-1ubuntu2.25
Ubuntu Ubuntu=14.04

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade ubuntu/libssl1.0.0 to a version that resolves this vulnerability.

    Fixed in 1.0.2g-1ubuntu13.5
  2. Upgrade

    Upgrade ubuntu/libssl1.0.0 to a version that resolves this vulnerability.

    Fixed in 1.0.2g-1ubuntu4.12
  3. Upgrade

    Upgrade ubuntu/libssl1.0.0 to a version that resolves this vulnerability.

    Fixed in 1.0.1f-1ubuntu2.25

Event History

Apr 19, 2018
Advisory Published
via Ubuntu·12:00 AM
Data Sourced
via Ubuntu·12:00 AM
DescriptionAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the USN for this OpenSSL vulnerability?

The USN for this OpenSSL vulnerability is USN-3628-1.

2

Who discovered the OpenSSL vulnerability?

Alejandro Cabrera Aldaya, Billy Brumley, Cesar Pereida Garcia, and Luis Manuel Alvarez Tapia discovered the OpenSSL vulnerability.

3

What is the impact of this OpenSSL vulnerability?

The OpenSSL vulnerability allows an attacker to perform a cache-timing attack and recover private RSA keys.

4

Which versions of libssl1.0.0 are affected by this vulnerability?

The versions affected by this OpenSSL vulnerability are 1.0.2g-1ubuntu13.5, 1.0.2g-1ubuntu4.12, and 1.0.1f-1ubuntu2.25.

5

How can I fix this OpenSSL vulnerability?

To fix this OpenSSL vulnerability, update libssl1.0.0 to the appropriate remedial versions: 1.0.2g-1ubuntu13.5, 1.0.2g-1ubuntu4.12, or 1.0.1f-1ubuntu2.25.

Contact

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