Vulnerability Report

CVE-2021-40085

Title: OpenStack Neutron dnsmasq reconfiguration via extra_dhcp_opts

Configuration Manipulation

Proof Of Concept

No public PoC currently indexed for CVE-2021-40085.

CWE Category NVD-CWE-noinfo

Published Date Aug 31, 2021

Modified Date Nov 21, 2024

Exploit Status Not Found

Score 6.5 CVSS v3.1

Exploit Probability (EPSS)

1.81%

Vulnerability Summary

CVE-2021-40085: 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.

Impacted Vendors

openstack 1

Reference Links

http://www.openwall.com/lists/oss-security/2021/08/31/2 https://launchpad.net/bugs/1939733 https://lists.debian.org/debian-lts-announce/2021/10/msg00005.html https://lists.debian.org/debian-lts-announce/2022/05/msg00038.html https://security.openstack.org/ossa/OSSA-2021-005.html https://www.debian.org/security/2021/dsa-4983 http://www.openwall.com/lists/oss-security/2021/08/31/2 https://launchpad.net/bugs/1939733 https://lists.debian.org/debian-lts-announce/2021/10/msg00005.html https://lists.debian.org/debian-lts-announce/2022/05/msg00038.html https://security.openstack.org/ossa/OSSA-2021-005.html https://www.debian.org/security/2021/dsa-4983

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.5

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CVSS v2.0

Source Entity [email protected]

Severity MEDIUM

4.0

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:L/Au:S/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-40085 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

November 21, 2024 MODIFIED

Vulnerability data or affected products updated.

August 31, 2021 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected Stack

No specific products linked.