[USN-2385-1] OpenSSL vulnerabilities

Marc Deslauriers marc.deslauriers at canonical.com
Thu Oct 16 16:35:38 UTC 2014


==========================================================================
Ubuntu Security Notice USN-2385-1
October 16, 2014

openssl vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
- Ubuntu 10.04 LTS

Summary:

Several security issues were fixed in OpenSSL.

Software Description:
- 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.

Update instructions:

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

Ubuntu 14.04 LTS:
  libssl1.0.0                     1.0.1f-1ubuntu2.7

Ubuntu 12.04 LTS:
  libssl1.0.0                     1.0.1-4ubuntu5.20

Ubuntu 10.04 LTS:
  libssl0.9.8                     0.9.8k-7ubuntu8.22

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

References:
  http://www.ubuntu.com/usn/usn-2385-1
  CVE-2014-3513, CVE-2014-3567

Package Information:
  https://launchpad.net/ubuntu/+source/openssl/1.0.1f-1ubuntu2.7
  https://launchpad.net/ubuntu/+source/openssl/1.0.1-4ubuntu5.20
  https://launchpad.net/ubuntu/+source/openssl/0.9.8k-7ubuntu8.22


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