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Ubuntu 12.04 LTS: USN-1516-1 Critical: OpenSSL TLS Disabling

ubuntu
Calendar Grey July 25, 2012
Scroller Ubuntu
Critical OpenSSL flaw affects Ubuntu 12.04 LTS; TLS versions 1.1 and 1.2 turned off, necessitating urgent upgrades and system restarts.
OpenSSL incorrectly disabled TLS 1.1 and TLS 1.2 in certain applications.

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.

Topics%20covered

Topics Covered

security advisory network security software update ubuntu openssl tls issue

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

https://ubuntu.com/security/notices/USN-1516-1

https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1018998

Severity
critical
Lowest
Low
Medium
High
Critical

July 25, 2012

Topics%20covered

Topics Covered

security advisory network security software update ubuntu openssl tls issue

Package Information

https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.3

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