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Bug#993398: neutron: CVE-2021-40085: Arbitrary dnsmasq reconfiguration via extra_dhcp_opts

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Source: neutron
Version: 2:18.1.0-2
Severity: grave
Tags: security upstream
Justification: user security hole
Forwarded: https://launchpad.net/bugs/1939733
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>
Control: found -1 2:17.1.1-6

Hi,

The following vulnerability was published for neutron.

CVE-2021-40085[0]:
| 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.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-40085
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40085
[1] https://launchpad.net/bugs/1939733
[2] https://www.openwall.com/lists/oss-security/2021/08/31/2

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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Bug#993398: neutron: CVE-2021-40085: Arbitrary dnsmasq reconfiguration via extra_dhcp_opts Salvatore Bonaccorso <carnil@debian.org> - 2021-08-31 21:30 +0200
  Bug#993398: neutron: CVE-2021-40085: Arbitrary dnsmasq reconfiguration via extra_dhcp_opts Thomas Goirand <zigo@debian.org> - 2021-09-01 10:10 +0200

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