Vulnerability identifier: #VU59320
Vulnerability 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
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
openstack-neutron
Client/Desktop applications /
Other client software
Vendor: Openstack
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
openstack-neutron: 16.0.0 - 16.4.0, 17.0.0 - 17.2.0, 18.0.0 - 18.1.0
External links
https://launchpad.net/bugs/1942179
https://security.openstack.org/ossa/OSSA-2021-006.html
https://www.openwall.com/lists/oss-security/2021/09/09/2
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.