CVE-2018-9230
9.8 · CRITICALOverview
CVE-2018-9230 is a critical-severity vulnerability affecting openresty openresty. It was published on April 2, 2018 and has a CVSS 3.0 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
In OpenResty through 1.13.6.1, URI parameters are obtained using the ngx.req.get_uri_args and ngx.req.get_post_args functions that ignore parameters beyond the hundredth one, which might allow remote attackers to bypass intended access restrictions or interfere with certain Web Application Firewall (ngx_lua_waf or X-WAF) products. NOTE: the vendor has reported that 100 parameters is an intentional default setting, but is adjustable within the API. The vendor's position is that a security-relevant misuse of the API by a WAF product is a vulnerability in the WAF product, not a vulnerability in OpenResty
Remediation
Check the references section for vendor advisories and patches from openresty. Update openresty 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 |
|---|---|---|---|
| openresty | openresty | >= 0, < 1.13.6.1 | Affected |
References
Frequently Asked Questions
What is CVE-2018-9230?
CVE-2018-9230 is a critical-severity vulnerability affecting openresty openresty. It was published on April 2, 2018 and has a CVSS 3.0 base score of 9.8 (CRITICAL).
How severe is CVE-2018-9230?
This vulnerability has a CVSS 3.0 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2018-9230?
Check the references section for vendor advisories and patches from openresty. Update openresty 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-2018-9230?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-9230 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.
How CyberStrike Helps
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