Vulnerability identifier: #VU50603

Vulnerability risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-35498

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Open vSwitch
Hardware solutions / Firmware

Vendor: openvswitch.org

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing network packets. A remote attacker can send specially crafted traffic to the system and perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Open vSwitch: 2.14.0 - 2.14.1, 2.13.0 - 2.13.2, 2.12.0 - 2.12.2, 2.11.0 - 2.11.5, 2.10.0 - 2.10.6, 2.9.0 - 2.9.8, 2.8.0 - 2.8.10, 2.7.0 - 2.7.12, 2.6.0 - 2.6.9, 2.5.0 - 2.5.11

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External links
http://seclists.org/oss-sec/2021/q1/135

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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. However, proof of concept for this vulnerability is available.