Arbitrary reconfiguration vulnerability in OpenStack Neutron
CVE-2021-40085

6.5MEDIUM

Key Information:

Vendor

Openstack
Status
Neutron
Vendor
CVE Published:
31 August 2021

What is CVE-2021-40085?

In OpenStack Neutron, a vulnerability exists that allows authenticated attackers to exploit the dnsmq service. By providing a specially crafted extra_dhcp_opts value, an attacker can reconfigure dnsmasq settings, potentially leading to server misconfigurations or the exposure of sensitive information. This vulnerability affects multiple versions of OpenStack Neutron, highlighting the importance of keeping network services up to date to mitigate such risks.

References

https://launchpad.net/bugs/1939733
x_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/08/31/2
mailing-listx_refsource_MLIST
https://security.openstack.org/ossa/OSSA-2021-005.html
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.