Red Hat OpenStack Platform 16.1 update for openstack-neutron

1) Resource exhaustion

EUVDB-ID: #VU59320

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-40797

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources when processing API calls to nonexistent controllers. A remote authenticated user can trigger resource exhaustion by sending multiple API calls and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat OpenStack for IBM Power: 16.1

Red Hat OpenStack: 16.1

openstack-neutron (Red Hat package): 15.2.1-1.20210409073447.el8ost

CPE2.3

• cpe:2.3:a:red_hat:red_hat_openstack_for_ibm_power:16.1:*:*:*:*:*:*:*
• cpe:2.3:a:red_hat:red_hat_openstack:16.1:*:*:*:*:*:*:*
• cpe:2.3:a:red_hat:openstack-neutron_redhat_package:15.2.1-1.20210409073447.el8ost:*:*:*:*:red_hat_enterprise_linux:*:*

External links

https://access.redhat.com/errata/RHSA-2022:0990

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.