USN-2367-1: OpenSSL update
Publication date
2 October 2014
Overview
OpenSSL TLSv1.2 support has been improved.
Releases
Packages
- openssl - Secure Socket Layer (SSL) cryptographic library and tools
Details
For compatibility reasons, OpenSSL in Ubuntu 12.04 LTS disables TLSv1.2
by default when being used as a client. When forcing the use of TLSv1.2,
another compatibility feature (OPENSSL_MAX_TLS1_2_CIPHER_LENGTH) was used
that would truncate the cipher list. This would prevent certain ciphers
from being selected, and would prevent secure renegotiations. This update
removes the cipher list truncation workaround when forcing the use of
TLSv1.2.
For compatibility reasons, OpenSSL in Ubuntu 12.04 LTS disables TLSv1.2
by default when being used as a client. When forcing the use of TLSv1.2,
another compatibility feature (OPENSSL_MAX_TLS1_2_CIPHER_LENGTH) was used
that would truncate the cipher list. This would prevent certain ciphers
from being selected, and would prevent secure renegotiations. This update
removes the cipher list truncation workaround when forcing the use of
TLSv1.2.
Update instructions
After a standard system update you need to reboot your computer to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 12.04 precise | libssl1.0.0 – 1.0.1-4ubuntu5.18 | ||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.