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AUSCERT External Security Bulletin Redistribution
ESB-2018.1231
OpenSSL vulnerability
20 April 2018
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AusCERT Security Bulletin Summary
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Product: OpenSSL
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Access Privileged Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2018-0737
Reference: ESB-2018.1173
Original Bulletin:
http://www.ubuntu.com/usn/usn-3628-2
http://www.ubuntu.com/usn/usn-3628-1
Comment: This bulletin contains two (2) Ubuntu security advisories.
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USN-3628-2: OpenSSL vulnerability
19 April 2018
openssl vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 12.04 ESM
Summary
OpenSSL could allow access to sensitve information.
Software Description
o 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
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the
necessary changes.
References
o https://usn.ubuntu.com/usn/usn-3628-2
o https://usn.ubuntu.com/usn/usn-3628-1
o CVE-2018-0737
(C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of
Canonical Ltd.
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USN-3628-1: OpenSSL vulnerability
19 April 2018
openssl vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 17.10
o Ubuntu 16.04 LTS
o Ubuntu 14.04 LTS
Summary
OpenSSL could allow access to sensitve information.
Software Description
o openssl - Secure Socket Layer (SSL) cryptographic library and tools
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 17.10
libssl1.0.0 - 1.0.2g-1ubuntu13.5
Ubuntu 16.04 LTS
libssl1.0.0 - 1.0.2g-1ubuntu4.12
Ubuntu 14.04 LTS
libssl1.0.0 - 1.0.1f-1ubuntu2.25
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to reboot your computer to make all the
necessary changes.
References
o https://usn.ubuntu.com/usn/usn-3628-1
o CVE-2018-0737
(C) 2017 Canonical Ltd. Ubuntu and Canonical are registered trademarks of
Canonical Ltd.
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