CVE-2019-9735 Information

Description

An issue was discovered in the iptables firewall module in OpenStack Neutron before 10.0.8 11.x before 11.0.7 12.x before 12.0.6 and 13.x before 13.0.3. By setting a destination port in a security group rule along with a protocol that doesn’t support that option (for example VRRP) an authenticated user may block further application of security group rules for instances from any project/tenant on the compute hosts to which it’s applied. (Only deployments using the iptables security group driver are affected.)

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Reference

http://www.openwall.com/lists/oss-security/2019/03/18/2 http://www.securityfocus.com/bid/107390 https://access.redhat.com/errata/RHSA-2019:0879 https://access.redhat.com/errata/RHSA-2019:0916 https://access.redhat.com/errata/RHSA-2019:0935 https://launchpad.net/bugs/1818385 https://seclists.org/bugtraq/2019/Mar/24 https://security.openstack.org/ossa/OSSA-2019-001.html https://usn.ubuntu.com/4036-1/ https://www.debian.org/security/2019/dsa-4409

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5