Vulnerability 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
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openresty | Openresty | < 1.13.6.1 |
Related Weaknesses (CWE)
References
- https://github.com/Bypass007/vuln/blob/master/OpenResty/Uri%20parameter%20overflExploitThird Party Advisory
- https://openresty.org/en/changelog-1013006.htmlVendor Advisory
- https://github.com/Bypass007/vuln/blob/master/OpenResty/Uri%20parameter%20overflExploitThird Party Advisory
- https://openresty.org/en/changelog-1013006.htmlVendor Advisory
FAQ
What is CVE-2018-9230?
CVE-2018-9230 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 ...
How severe is CVE-2018-9230?
CVE-2018-9230 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-9230?
Check the references section above for vendor advisories and patch information. Affected products include: Openresty Openresty.