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debianDebianDEBIAN:DSA-4983-1:83C18
HistoryOct 10, 2021 - 6:06 p.m.

[SECURITY] [DSA 4983-1] neutron security update

2021-10-1018:06:29
lists.debian.org
37
neutron
openstack
vulnerability
dnsmasq
reconfiguration
security update

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:P/A:P

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.8

Confidence

High

EPSS

0.001

Percentile

44.8%


Debian Security Advisory DSA-4983-1 [email protected]
https://www.debian.org/security/ Moritz Muehlenhoff
October 10, 2021 https://www.debian.org/security/faq


Package : neutron
CVE ID : CVE-2021-40085
Debian Bug : 993398

Pavel Toporkov discovered a vulnerability in Neutron, the OpenStack
virtual network service, which allowed a reconfiguration of dnsmasq
via crafted dhcp_extra_opts parameters.

For the oldstable distribution (buster), this problem has been fixed
in version 2:13.0.7+git.2021.09.27.bace3d1890-0+deb10u1. This update
also fixes CVE-2021-20267.

For the stable distribution (bullseye), this problem has been fixed in
version 2:17.2.1-0+deb11u1. This update also fixes CVE-2021-38598.

We recommend that you upgrade your neutron packages.

For the detailed security status of neutron please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/neutron

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:N/I:P/A:P

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

6.8

Confidence

High

EPSS

0.001

Percentile

44.8%