USN-2232-2: OpenSSL regression

Releases

• Ubuntu 14.04 ESM
• Ubuntu 13.10
• Ubuntu 12.04

Packages

• 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
handshakes. A remote attacker could use this flaw to perform a
machine-in-the-middle attack and possibly decrypt and modify traffic.
(CVE-2014-0224)

Felix Gröbert and Ivan Fratrić discovered that OpenSSL incorrectly handled
anonymous ECDH ciphersuites. A remote attacker could use this issue to
cause OpenSSL to crash, resulting in a denial of service. This issue only
affected Ubuntu 12.04 LTS, Ubuntu 13.10, and Ubuntu 14.04 LTS.
(CVE-2014-3470)

Update instructions

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

Ubuntu 14.04

• libssl1.0.0 - 1.0.1f-1ubuntu2.3

Ubuntu 13.10

• libssl1.0.0 - 1.0.1e-3ubuntu1.5

Ubuntu 12.04

• 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.

References

• https://launchpad.net/bugs/1329297