Ubuntu Security Notice 2624-1 - As a security improvement, this update removes the export cipher suites from the default cipher list to prevent their use in possible downgrade attacks.
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Ubuntu Security Notice USN-2624-1
June 01, 2015
openssl update
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.04
- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary:
The export cipher suites have been disabled in OpenSSL.
Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools
Details:
As a security improvement, this update removes the export cipher suites
from the default cipher list to prevent their use in possible downgrade
attacks.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 15.04:
libssl1.0.0 1.0.1f-1ubuntu11.1
Ubuntu 14.10:
libssl1.0.0 1.0.1f-1ubuntu9.5
Ubuntu 14.04 LTS:
libssl1.0.0 1.0.1f-1ubuntu2.12
Ubuntu 12.04 LTS:
libssl1.0.0 1.0.1-4ubuntu5.28
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-2624-1
https://launchpad.net/bugs/1460735
Package Information:
https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu11.1
https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu9.5
https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.12
https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.28