Denial of service in Open vSwitch

1) Out-of-bounds read

EUVDB-ID: #VU68717

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-32166

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary condition within the minimasks() function in flow.c. A remote attacker can pass specially crafted data to the application, trigger an out-of-bounds read error and crash the service.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Open vSwitch: 0.90.0 - 2.5.0

External links

http://github.com/cloudbase/ovs/commit/2ed6505555cdcb46f9b1f0329d1491b75290fc73
http://bugzilla.redhat.com/show_bug.cgi?id=2130577

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.