Scientific Linux Security Update : openssl on SL6.x i386/x86_64

This script is Copyright (C) 2014 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

It was found that OpenSSL clients and servers could be forced, via a
specially crafted handshake packet, to use weak keying material for
communication. A man-in-the-middle attacker could use this flaw to
decrypt and modify traffic between a client and a server.
(CVE-2014-0224)

Note: In order to exploit this flaw, both the server and the client
must be using a vulnerable version of OpenSSL
the server must be
using OpenSSL version 1.0.1 and above, and the client must be using
any version of OpenSSL. For more information about this flaw, refer
to :

A buffer overflow flaw was found in the way OpenSSL handled invalid
DTLS packet fragments. A remote attacker could possibly use this flaw
to execute arbitrary code on a DTLS client or server. (CVE-2014-0195)

Multiple flaws were found in the way OpenSSL handled read and write
buffers when the SSL_MODE_RELEASE_BUFFERS mode was enabled. A TLS/SSL
client or server using OpenSSL could crash or unexpectedly drop
connections when processing certain SSL traffic. (CVE-2010-5298,
CVE-2014-0198)

A denial of service flaw was found in the way OpenSSL handled certain
DTLS ServerHello requests. A specially crafted DTLS handshake packet
could cause a DTLS client using OpenSSL to crash. (CVE-2014-0221)

A NULL pointer dereference flaw was found in the way OpenSSL performed
anonymous Elliptic Curve Diffie Hellman (ECDH) key exchange. A
specially crafted handshake packet could cause a TLS/SSL client that
has the anonymous ECDH cipher suite enabled to crash. (CVE-2014-3470)

For the update to take effect, all services linked to the OpenSSL
library (such as httpd and other SSL-enabled services) must be
restarted or the system rebooted.

See also :

http://www.nessus.org/u?33892d79

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)
Public Exploit Available : true

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 74350 ()

Bugtraq ID:

CVE ID: CVE-2010-5298
CVE-2014-0195
CVE-2014-0198
CVE-2014-0221
CVE-2014-0224
CVE-2014-3470