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USN-2385-1: OpenSSL vulnerabilities

16 October 2014

Several security issues were fixed in OpenSSL.

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Releases

Packages

  • openssl - Secure Socket Layer (SSL) cryptographic library and tools

Details

It was discovered that OpenSSL incorrectly handled memory when parsing
DTLS SRTP extension data. A remote attacker could possibly use this issue
to cause OpenSSL to consume resources, resulting in a denial of service.
This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS.
(CVE-2014-3513)

It was discovered that OpenSSL incorrectly handled memory when verifying
the integrity of a session ticket. A remote attacker could possibly use
this issue to cause OpenSSL to consume resources, resulting in a denial of
service. (CVE-2014-3567)

In addition, this update introduces support for the TLS Fallback Signaling
Cipher Suite Value (TLS_FALLBACK_SCSV). This new feature prevents protocol
downgrade attacks when certain applications such as web browsers attempt
to reconnect using a lower protocol version for interoperability reasons.

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.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 14.04
Ubuntu 12.04
Ubuntu 10.04

After a standard system update you need to reboot your computer to make all
the necessary changes.