Strix
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CVE-2019-9735

UnknownEPSS 3.70%

Last modified

CVE-2019-9735 is a vulnerability of currently unknown severity. 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. EPSS estimates a 3.70% chance of exploitation in the next 30 days.

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.)

Metrics

EPSS Probability
3.70%

88.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
OpenstackNeutron< 10.0.8
OpenstackNeutron>= 11.0.0, < 11.0.7
OpenstackNeutron>= 12.0.0, < 12.0.6
OpenstackNeutron>= 13.0.0, < 13.0.3
RedhatOpenstack10
RedhatOpenstack13
RedhatOpenstack14
DebianDebian Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-9735?
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.)
How severe is CVE-2019-9735?
Severity scoring for CVE-2019-9735 is pending analysis. The EPSS model estimates a 3.70% probability of exploitation in the next 30 days.
How do I fix CVE-2019-9735?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-9735?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST