Multiple vulnerabilities in Open vSwitch LLDP processing

Published: 2022-12-21 | Updated: 2022-12-21

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-4338 CVE-2022-4337
CWE-ID	CWE-191 CWE-125
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Open vSwitch Hardware solutions / Firmware
Vendor	openvswitch.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Integer underflow

EUVDB-ID: #VU70459

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 - Integer underflow

Exploit availability: No

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: 2.4 - 3.0.2

External links

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

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.

2) Out-of-bounds read

EUVDB-ID: #VU70471

Risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-4337

CWE-ID: CWE-125 - Out-of-bounds read