Ubuntu Security Notice 1516-1 - It was discovered that OpenSSL incorrectly handled the SSL_OP_ALL setting. This resulted in TLS 1.1 and TLS 1.2 being inadvertently disabled for certain server and client applications.
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Ubuntu Security Notice USN-1516-1
July 25, 2012
openssl vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
OpenSSL incorrectly disabled TLS 1.1 and TLS 1.2 in certain applications.
Software Description:
- openssl: Secure Socket Layer (SSL) cryptographic library and tools
Details:
It was discovered that OpenSSL incorrectly handled the SSL_OP_ALL setting.
This resulted in TLS 1.1 and TLS 1.2 being inadvertently disabled for
certain server and client applications.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
libssl1.0.0 1.0.1-4ubuntu5.3
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1516-1
https://launchpad.net/bugs/1018998
Package Information:
https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.3