Vulnerability identifier: #VU70459

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4338

CWE-ID: CWE-191

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 vulnerability exists due to integer underflow when parsing Auto Attach TLV. A remote attacker can send specially crafted LLDP messages to the affected system, trigger an integer underflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, by default interfaces are not configured to process LLDP messages.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Open vSwitch: 3.0.0 - 3.0.2, 2.17.0 - 2.17.4, 2.16.0 - 2.16.5, 2.15.0 - 2.15.6, 2.14.0 - 2.14.7, 2.13.0 - 2.13.9, 2.12.0 - 2.12.4, 2.11.0 - 2.11.7, 2.10.0 - 2.10.7, 2.9.0 - 2.9.9, 2.8.0 - 2.8.11, 2.7.0 - 2.7.13, 2.6.0 - 2.6.10, 2.5.0 - 2.5.12, 2.4 - 2.4.1

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External links
http://mail.openvswitch.org/pipermail/ovs-announce/2022-December/000313.html
http://seclists.org/oss-sec/2022/q4/207

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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.