OpenSSL 1.1.0a read_state_machine() Function Message Handling RCE

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


Synopsis :

The remote service is potentially affected by a remote code execution
vulnerability.

Description :

According to its banner, the remote host is running OpenSSL version
1.1.0a. It is, therefore, affected by a remote code execution
vulnerability in the read_state_machine() function in statem.c due to
improper handling of messages larger than 16k. An unauthenticated,
remote attacker can exploit this, via a specially crafted message, to
cause a use-after-free error, resulting in a denial of service
condition or possibly the execution of arbitrary code.

See also :

https://www.openssl.org/news/secadv/20160926.txt

Solution :

Upgrade to OpenSSL version 1.1.0b or later.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Web Servers

Nessus Plugin ID: 93787 ()

Bugtraq ID: 93177

CVE ID: CVE-2016-6309

Ready to Amp Up Your Nessus Experience?

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

Buy Nessus Professional Now