CVE-2018-9230

critical · 9.8

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

9.8

CVSS

13.2%

EPSS (exploit prob.)

96th

EPSS percentile

2018-04-02

Published

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-89

Affected products

Vendor	Product	Affected versions
openresty	openresty	< 1.13.6.1

Check a specific version with /api/v1/cve/match.

References

https://github.com/Bypass007/vuln/blob/master/OpenResty/Uri%20parameter%20overflow%20in%20Openresty.md
https://openresty.org/en/changelog-1013006.html
https://github.com/Bypass007/vuln/blob/master/OpenResty/Uri%20parameter%20overflow%20in%20Openresty.md
https://openresty.org/en/changelog-1013006.html

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2018-9230