CVE-2021-38598: openstack neutron Authentication Bypass by Spoofing

EPSS trend

Probability

1.22%

Chance of exploitation in the next 30 days

Percentile

68%

Versus all other CVEs

30-day change

0.00 pp

From 1.22% on 18-09-2026

18-09-202618-10-2026

EPSS score

1.22%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

1 found

referenceUnverified
Exploit Reference (launchpad.net)
Maturity: unknown

References

14 links

launchpad.net/bugs/1938670X Refsource MISCWEBExploitIssue TrackingThird Party Advisory
nvd.nist.gov/vuln/detail/CVE-2021-38598Advisory
github.com/openstack/neutron/commit/0a931391d8990f3e654b4bfda24ae4119c609bbfWEB
github.com/openstack/neutron/commit/cc0d28a3e2ccfad6fc2ff24d78f009cbe3992575WEB
github.com/openstack/neutronPACKAGE
github.com/pypa/advisory-database/tree/main/vulns/neutron/PYSEC-2021-360.yamlWEB
opendev.org/openstack/neutron/commit/fafa5dacd5057120562184a734e7345e7c0e9639WEB
github.com/advisories/GHSA-hvm4-mc7m-22w4Advisory
ubuntu.com/security/CVE-2021-38598REPORT
www.openwall.com/lists/oss-security/2021/08/17/4REPORT

Show all 14 references

review.opendev.org/c/openstack/neutron/+/785917/REPORT
ubuntu.com/security/notices/USN-6067-1Advisory
www.cve.org/CVERecord?id=CVE-2021-38598REPORT
security-tracker.debian.org/tracker/CVE-2021-38598Advisory

Related vulnerabilities

CVE-2018-14635debianneutron+162.53%8y ago10-09-2018 19:00When using the Linux bridge ml2 driver, non-privileged tenants are able to create and attach ports without specifying an IP address, bypassing IP address validation. A potential denial of service could occur if an IP address, conflicting with existing guests or routers, is then assigned from outside of the allowed allocation pool. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3 and 11.0.5 are vulnerable.CVE-2018-14636debianneutron+41.17%8y ago10-09-2018 19:00Live-migrated instances are briefly able to inspect traffic for other instances on the same hypervisor. This brief window could be extended indefinitely if the instance's port is set administratively down prior to live-migration and kept down after the migration is complete. This is possible due to the Open vSwitch integration bridge being connected to the instance during migration. When connected to the integration bridge, all traffic for instances using the same Open vSwitch instance would potentially be visible to the migrated guest, as the required Open vSwitch VLAN filters are only applied post-migration. Versions of openstack-neutron before 13.0.0.0b2, 12.0.3, 11.0.5 are vulnerable.CVE-2013-6433canonicalubuntu_linux+33.32%12y ago02-06-2014 15:00The default configuration in the Red Hat openstack-neutron package before 2013.2.3-7 does not properly set a configuration file for rootwrap, which allows remote attackers to gain privileges via a crafted configuration file.CVE-2021-40797debianneutron+131.77%5y ago08-09-2021 19:11An issue was discovered in the routes middleware in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. By making API requests involving nonexistent controllers, an authenticated user may cause the API worker to consume increasing amounts of memory, resulting in API performance degradation or denial of service.CVE-2021-40085debianneutron+161.83%5y ago31-08-2021 17:32An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.CVE-2021-20267debianneutron+41.02%5y ago28-05-2021 18:46A flaw was found in openstack-neutron's default Open vSwitch firewall rules. By sending carefully crafted packets, anyone in control of a server instance connected to the virtual switch can impersonate the IPv6 addresses of other systems on the network, resulting in denial of service or in some cases possibly interception of traffic intended for other destinations. Only deployments using the Open vSwitch driver are affected. Source: OpenStack project. Versions before openstack-neutron 15.3.3, openstack-neutron 16.3.1 and openstack-neutron 17.1.1 are affected.

All vulnerabilities inneutron

CVE-2021-38598: openstack neutron Authentication Bypass by Spoofing

Vulnerability summary

Advisory lineage

Timeline

Description

CVSS metrics

EPSS trend

Known exploited

Public exploits

Weaknesses

Affected systems

References