CVE-2021-40085

Public Exploit

Description

An 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.

6.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.31%

Vendor Advisory debian.org Vendor Advisory openstack.org

Affected: n/a n/a

References

Link	Tags
https://launchpad.net/bugs/1939733	issue tracking exploit third party advisory
http://www.openwall.com/lists/oss-security/2021/08/31/2	mailing list third party advisory patch
https://security.openstack.org/ossa/OSSA-2021-005.html	patch vendor advisory
https://lists.debian.org/debian-lts-announce/2021/10/msg00005.html	third party advisory mailing list
https://www.debian.org/security/2021/dsa-4983	third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00038.html	third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2021-40085?: CVE-2021-40085 has been scored as a medium severity vulnerability.
How to fix CVE-2021-40085?: To fix CVE-2021-40085, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40085 being actively exploited in the wild?: It is possible that CVE-2021-40085 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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