VMware ESXi Multiple OpenSSL Vulnerabilities (VMSA-2014-0006)

This script is Copyright (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

The remote VMware ESXi host is missing a security-related patch.

Description :

The remote VMware ESXi host is affected by multiple vulnerabilities
in the OpenSSL third-party library :

- A use-after-free error exists in the ssl3_read_bytes()
function in file ssl/s3_pkt.c that is triggered when a
second read is done to the function by multiple threads
when SSL_MODE_RELEASE_BUFFERS is enabled. A
man-in-the-middle attacker can exploit this to
dereference already freed memory and inject arbitrary
data into the SSL stream. (CVE-2010-5298)

- A NULL pointer dereference flaw exists in the
do_ssl3_write() function in file ssl/s3_pkt.c due to a
failure to properly manage a buffer pointer during
certain recursive calls when SSL_MODE_RELEASE_BUFFERS is
enabled. A remote attacker can exploit this, by
triggering an alert condition, to cause a denial of
service. (CVE-2014-0198)

- A flaw exists due to a failure to properly restrict
processing of ChangeCipherSpec messages. A
man-in-the-middle attacker can exploit this, via a
crafted TLS handshake, to force the use of a zero-length
master key in certain OpenSSL-to-OpenSSL communications,
resulting in the session being hijacked and sensitive
information being disclosed. (CVE-2014-0224)

- A NULL pointer dereference flaw exists in the
ssl3_send_client_key_exchange() function in file
s3_clnt.c, when an anonymous ECDH cipher suite is used,
that allows a remote attacker to cause a denial of
service. (CVE-2014-3470)

See also :

https://www.vmware.com/security/advisories/VMSA-2014-0006
http://lists.vmware.com/pipermail/security-announce/2014/000276.html

Solution :

Apply the appropriate patch according to the vendor advisory that
pertains to ESXi version 5.0 / 5.1 / 5.5.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 5.3
(CVSS2#E:POC/RL:OF/RC:C)
Public Exploit Available : true

Family: Misc.

Nessus Plugin ID: 87678 ()

Bugtraq ID: 66801
67193
67898
67899

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

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now