Fast Datapath for Red Hat Enterprise Linux 8 update for openvswitch3.1

1) Out-of-bounds read

EUVDB-ID: #VU86295

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-2023-3966

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 when handling Geneve packets. A remote attacker can send specially crafted Geneve packets with HF offload to the system, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux Fast Datapath (for RHEL for ARM 64): 8

Red Hat Enterprise Linux Fast Datapath (for IBM z Systems): 8

Red Hat Enterprise Linux Fast Datapath (for RHEL Server for IBM Power LE): 8

Red Hat Enterprise Linux Fast Datapath: 8

openvswitch3.1 (Red Hat package): before 3.1.0-96.el8fdp

External links

http://access.redhat.com/errata/RHSA-2024:1235

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.