Ubuntu 14.04: USN-2232-2 Moderate: OpenSSL Denial Of Service

ubuntu

June 12, 2014

USN-2232-1 introduced a regression in OpenSSL.

Summary

USN-2232-1 introduced a regression in OpenSSL.

Software Description:

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

Details:

USN-2232-1 fixed vulnerabilities in OpenSSL. The upstream fix for

CVE-2014-0224 caused a regression for certain applications that use

tls_session_secret_cb, such as wpa_supplicant. This update fixes the

problem.

Original advisory details:

Jüri Aedla discovered that OpenSSL incorrectly handled invalid DTLS

fragments. A remote attacker could use this issue to cause OpenSSL to

crash, resulting in a denial of service, or possibly execute arbitrary

code. This issue only affected Ubuntu 12.04 LTS, Ubuntu 13.10, and

Ubuntu 14.04 LTS. (CVE-2014-0195)

Imre Rad discovered that OpenSSL incorrectly handled DTLS recursions. A

remote attacker could use this issue to cause OpenSSL to crash, resulting

in a denial of service. (CVE-2014-0221)

KIKUCHI Masashi discovered that OpenSSL incorrectly handled certain

hand...

Read the Full Advisory

Topics Covered

security advisory denial of service software update ubuntu openssl regression fix

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-1ubuntu2.3

Ubuntu 13.10:
  libssl1.0.0                     1.0.1e-3ubuntu1.5

Ubuntu 12.04 LTS:
  libssl1.0.0                     1.0.1-4ubuntu5.15

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