Cisco Security Manager 4.9.x < 4.9(0.397) / 4.10.x < 4.10(0.189) OpenSSL ASN.1 Signature Handling DoS

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


Synopsis :

The web application running on the remote web server is affected by a
denial of service vulnerability.

Description :

The version of Cisco Security Manager running on the remote web server
is 4.9.x prior to 4.9(0.397) or 4.10.x prior to 4.10(0.189). It is,
therefore, affected by a NULL pointer dereference flaw in file
rsa_ameth.c due to improper handling of ASN.1 signatures that are
missing the PSS parameter. A remote attacker can exploit this to cause
the signature verification routine to crash, resulting in a denial of
service condition.

See also :

http://www.nessus.org/u?4099a8d6
https://tools.cisco.com/bugsearch/bug/CSCux41352
https://www.openssl.org/news/secadv/20151203.txt

Solution :

Upgrade to Cisco Security Manager version 4.9(0.397) / 4.10(0.189) or
later.

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)
CVSS Temporal Score : 3.7
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Windows

Nessus Plugin ID: 88593 ()

Bugtraq ID: 78623

CVE ID: CVE-2015-3194

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