Vulnerability identifier: #VU1138

Vulnerability risk: High

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6447

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Meeting Server
Client/Desktop applications / Multimedia software
Cisco Meeting App
Client/Desktop applications / Office applications

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote unauthenticated user to execute arbitrary code on the target system.
The weakness is due to insufficient input validation. By sending a specially crafted IPv6 data, a remote attacker can trigger a buffer underflow or memory allocation error that allows him to execute arbitrary code or reload the affected device.
Successful exploitation of the vulnerability may result in arbitrary code execution.

Mitigation
Update to version 2.0.1.

Vulnerable software versions

Cisco Meeting Server: 1.8 - 2.0.1

Cisco Meeting App: 1.8 - 1.9.8

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20161102-cms

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.