1. Ubuntu Security Notices
  2. USN-2079-1

USN-2079-1: OpenSSL vulnerabilities

Publication date

9 January 2014

Overview

Several security issues were fixed in OpenSSL.

Releases

Packages

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

Details

Anton Johansson discovered that OpenSSL incorrectly handled certain invalid
TLS handshakes. A remote attacker could use this issue to cause OpenSSL to
crash, resulting in a denial of service. (CVE-2013-4353)

Ron Barber discovered that OpenSSL used an incorrect data structure to
obtain a version number. A remote attacker could use this issue to cause
OpenSSL to crash, resulting in a denial of service. (CVE-2013-6449)

Dmitry Sobinov discovered that OpenSSL incorrectly handled certain DTLS
retransmissions. A remote attacker could use this issue to cause OpenSSL to
crash, resulting in a denial of service. (CVE-2013-6450)

This update also disables the default use of the RdRand feature of certain
Intel CPUs as the sole source of entropy.

Anton Johansson discovered that OpenSSL incorrectly handled certain invalid
TLS handshakes. A remote attacker could use this issue to cause OpenSSL to
crash, resulting in a denial of service. (CVE-2013-4353)

Ron Barber discovered that OpenSSL used an incorrect data structure to
obtain a version number. A remote attacker could use this issue to cause
OpenSSL to crash, resulting in a denial of service. (CVE-2013-6449)

Dmitry Sobinov discovered that OpenSSL incorrectly handled certain DTLS
retransmissions. A remote attacker could use this issue to cause OpenSSL to
crash, resulting in a denial of service. (CVE-2013-6450)

This update also disables the default use of the RdRand feature of certain
Intel CPUs as the sole source of entropy.

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
13.10 saucy libssl1.0.0 –  1.0.1e-3ubuntu1.1
13.04 raring libssl1.0.0 –  1.0.1c-4ubuntu8.2
12.10 quantal libssl1.0.0 –  1.0.1c-3ubuntu2.6
12.04 precise libssl1.0.0 –  1.0.1-4ubuntu5.11

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References

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