CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
EPSS
Percentile
73.9%
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.)
www.openwall.com/lists/oss-security/2019/03/18/2
access.redhat.com/errata/RHSA-2019:0879
access.redhat.com/errata/RHSA-2019:0916
access.redhat.com/errata/RHSA-2019:0935
github.com/advisories/GHSA-9773-3fqg-8w25
launchpad.net/bugs/1818385
nvd.nist.gov/vuln/detail/CVE-2019-9735
seclists.org/bugtraq/2019/Mar/24
security.openstack.org/ossa/OSSA-2019-001.html
usn.ubuntu.com/4036-1
web.archive.org/web/20201208185619/www.securityfocus.com/bid/107390
www.debian.org/security/2019/dsa-4409
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
Low
EPSS
Percentile
73.9%