CVE-2018-17205
7.5 · HIGHOverview
CVE-2018-17205 is a high-severity vulnerability affecting openvswitch openvswitch. It was published on September 19, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting ofproto_rule_insert__ in ofproto/ofproto.c. During bundle commit, flows that are added in a bundle are applied to ofproto in order. If a flow cannot be added (e.g., the flow action is a go-to for a group id that does not exist), OvS tries to revert back all previous flows that were successfully applied from the same bundle. This is possible since OvS maintains list of old flows that were replaced by flows from the bundle. While reinserting old flows, OvS has an assertion failure due to a check on rule state != RULE_INITIALIZED. This would work for new flows, but for an old flow the rule state is RULE_REMOVED. The assertion failure causes an OvS crash.
Remediation
Check the references section for vendor advisories and patches from openvswitch. Update openvswitch to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| openvswitch | openvswitch | 2.7.0 | Affected |
References
Frequently Asked Questions
What is CVE-2018-17205?
CVE-2018-17205 is a high-severity vulnerability affecting openvswitch openvswitch. It was published on September 19, 2018 and has a CVSS 3.0 base score of 7.5 (HIGH).
How severe is CVE-2018-17205?
This vulnerability has a CVSS 3.0 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2018-17205?
Check the references section for vendor advisories and patches from openvswitch. Update openvswitch to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2018-17205?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-17205 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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