openresty / openresty/lua-nginx-module
ngx.re.match throw exception when match �
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Description
Hello,Agentzh:
I use Lua to build a WAF on nginx, but I met a problem that When I request a URI like "1.php?id=1%df%27%20and%20%271%27=%271"
The ngx.re.match throw a exception:
pcre_exec() failed: -10 on "1�' and '1'='1" using
but when I give Chinese to it, it works.
1.php?id=%E6%88%91%E6%98%AF%E4%BD%A0
Can you help me to solve the problem , thank you very much.
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Research direction
Start by reproducing the reported URI with ngx.re.match and inspect the pcre_exec() -10 failure on the decoded input. Compare that behavior with the Chinese URI example, then determine the expected handling for the reported match failure and document or test the resulting behavior.
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Assessment
- Tech stack
- c, lua
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100