Vulnerability identifier: #VU629

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6409

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS
Operating systems & Components / Operating system
Cisco IOS XR
Operating systems & Components / Operating system
Cisco IOS XE
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote user to cause denial of service on the target system.
The weakness is caused by improper bounds validation. By sending specially crafted data attackers can cause a boundary error in the Cisco Data in Motion (DMo) component that leads to denial of service conditions on the target DMo process.
Successful exploitation of the vulnerability results in denial of service on the vulnerable service.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco IOS: 12.0 - 15.2.4 ea

Cisco IOS XR: 5.1.0 - 6.0.1

Cisco IOS XE: 3.15S - 3.17S

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160921-dmo

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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.