Ubuntu 12.04 LTS / 12.10 / 13.04 / 13.10 : openssl vulnerabilities (USN-2079-1)

Ubuntu Security Notice (C) 2014-2016 Canonical, Inc. / NASL script (C) 2014-2016 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing a security-related patch.

Description :

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.

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

Solution :

Update the affected libssl1.0.0 package.

Risk factor :

Medium / CVSS Base Score : 5.8
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P)
CVSS Temporal Score : 4.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 71896 ()

Bugtraq ID: 64530
64618
64691

CVE ID: CVE-2013-4353
CVE-2013-6449
CVE-2013-6450