Vulnerability Details : CVE-2019-10876
An issue was discovered in OpenStack Neutron 11.x before 11.0.7, 12.x before 12.0.6, and 13.x before 13.0.3. By creating two security groups with separate/overlapping port ranges, an authenticated user may prevent Neutron from being able to configure networks on any compute nodes where those security groups are present, because of an Open vSwitch (OVS) firewall KeyError. All Neutron deployments utilizing neutron-openvswitch-agent are affected.
Products affected by CVE-2019-10876
- cpe:2.3:a:redhat:openstack:14:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
- cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-10876
0.90%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 74 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-10876
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:N/A:N |
8.0
|
2.9
|
NIST | |
6.5
|
MEDIUM | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
2.8
|
3.6
|
NIST |
References for CVE-2019-10876
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https://review.openstack.org/#/q/topic:bug/1813007
topic:bug/1813007 | review.opendev Code ReviewVendor Advisory
-
https://security.openstack.org/ossa/OSSA-2019-002.html
OpenStack Docs: OSSA-2019-002: Overlapping security group rules prevents compute node network configurationThird Party Advisory
-
https://bugs.launchpad.net/ossa/+bug/1813007
Bug #1813007 “[SRU] [OSSA-2019-002] Unable to install new flows ...” : Bugs : OpenStack Security AdvisoryIssue Tracking;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2019/04/09/2
oss-security - [OSSA-2019-002] neutron-openvswitch-agent: Unable to install new flows on compute nodes when having broken security group rules (CVE-2019-10876)Mailing List;Third Party Advisory
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https://access.redhat.com/errata/RHSA-2019:0935
RHSA-2019:0935 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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https://access.redhat.com/errata/RHSA-2019:0879
RHSA-2019:0879 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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