Vulnerability identifier: #VU11451

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-2016-2074

CWE-ID: CWE-120

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Open vSwitch
Hardware solutions / Firmware

Vendor: openvswitch.org

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in lib/flow.c in ovs-vswitchd due to boundary error. A remote attacker can send specially crafted MPLS packets, as demonstrated by a long string in an ovs-appctl command, and execute arbitrary code.

Mitigation
Update to versions 2.3.3 or 2.4.1.

Vulnerable software versions

Open vSwitch: 2.2, 2.3, 2.4

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External links
http://bugzilla.redhat.com/show_bug.cgi?id=1318553

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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.