Skip to content

Instantly share code, notes, and snippets.

@lazyjerry
Last active August 6, 2020 15:56
Show Gist options
  • Save lazyjerry/7d83c054bce7e804bda95f7a931b2dc6 to your computer and use it in GitHub Desktop.
Save lazyjerry/7d83c054bce7e804bda95f7a931b2dc6 to your computer and use it in GitHub Desktop.
設定防止注入、檔案防護的機制。放在 nginx 的 server block 中
## 放在 server 區塊中,也可以獨立一個檔案讀取
## ref: https://www.howtoforge.com/nginx-how-to-block-exploits-sql-injections-file-injections-spam-user-agents-etc
## Block SQL injections
set $block_sql_injections 0;
if ($query_string ~ "union.*select.*\(") {
set $block_sql_injections 1;
}
if ($query_string ~ "union.*all.*select.*") {
set $block_sql_injections 1;
}
if ($query_string ~ "concat.*\(") {
set $block_sql_injections 1;
}
if ($block_sql_injections = 1) {
return 403;
}
## Block file injections
set $block_file_injections 0;
if ($query_string ~ "[a-zA-Z0-9_]=http://") {
set $block_file_injections 1;
}
if ($query_string ~ "[a-zA-Z0-9_]=(\.\.//?)+") {
set $block_file_injections 1;
}
if ($query_string ~ "[a-zA-Z0-9_]=/([a-z0-9_.]//?)+") {
set $block_file_injections 1;
}
if ($block_file_injections = 1) {
return 403;
}
## Block common exploits
set $block_common_exploits 0;
if ($query_string ~ "(<|%3C).*script.*(>|%3E)") {
set $block_common_exploits 1;
}
if ($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{0,2})") {
set $block_common_exploits 1;
}
if ($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{0,2})") {
set $block_common_exploits 1;
}
if ($query_string ~ "proc/self/environ") {
set $block_common_exploits 1;
}
if ($query_string ~ "mosConfig_[a-zA-Z_]{1,21}(=|\%3D)") {
set $block_common_exploits 1;
}
if ($query_string ~ "base64_(en|de)code\(.*\)") {
set $block_common_exploits 1;
}
if ($block_common_exploits = 1) {
return 403;
}
## Block spam
set $block_spam 0;
if ($query_string ~ "\b(ultram|unicauca|valium|viagra|vicodin|xanax|ypxaieo)\b") {
set $block_spam 1;
}
if ($query_string ~ "\b(erections|hoodia|huronriveracres|impotence|levitra|libido)\b") {
set $block_spam 1;
}
if ($query_string ~ "\b(ambien|blue\spill|cialis|cocaine|ejaculation|erectile)\b") {
set $block_spam 1;
}
if ($query_string ~ "\b(lipitor|phentermin|pro[sz]ac|sandyauer|tramadol|troyhamby)\b") {
set $block_spam 1;
}
if ($block_spam = 1) {
return 403;
}
## 這裡是把奇怪的 user agents 擋下來
## Block user agents
set $block_user_agents 0;
# Don't disable wget if you need it to run cron jobs!
#if ($http_user_agent ~ "Wget") {
# set $block_user_agents 1;
#}
# Disable Akeeba Remote Control 2.5 and earlier
if ($http_user_agent ~ "Indy Library") {
set $block_user_agents 1;
}
# Common bandwidth hoggers and hacking tools.
if ($http_user_agent ~ "libwww-perl") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "GetRight") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "GetWeb!") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "Go!Zilla") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "Download Demon") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "Go-Ahead-Got-It") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "TurnitinBot") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "GrabNet") {
set $block_user_agents 1;
}
## 符合以上特質的顯示 403 錯誤
if ($block_user_agents = 1) {
return 403;
}
## 附上檔案 deny 設定
location ~* \.(vscode|workspace|real|cfg|env|env_sample|svn|git|bak|bk|old|save|swp|svn|git|DS_Store|gitignore|disable|sample|conf) { deny all; }
location ~* /(\.git|cache|bin|logs|backup|tests)/.*$ { deny all; }
location ~* /(system|vendors)/.*\.(txt|xml|md|html|yaml|yml|php|pl|py|cgi|twig|sh|bat)$ { deny all; }
location ~* /user/.*\.(txt|md|yaml|yml|php|pl|py|cgi|twig|sh|bat)$ { deny all; }
location ~ /(LICENSE\.txt|composer\.lock|composer\.json|nginx\.conf|web\.config|htaccess\.txt|\.htaccess) { deny all; }
location ~ /(goaccess_report\.html|LICENSE\.txt|composer\.lock|composer\.json|nginx\.conf|web\.config|htaccess\.txt|\.htaccess) { deny all; }
location ~* \.(jpg|jpeg|png|css|js)$ {
expires 7d;
}
## 放在 server 區塊中,也可以獨立一個檔案讀取
## ref: https://www.howtoforge.com/nginx-how-to-block-exploits-sql-injections-file-injections-spam-user-agents-etc
## Block SQL injections
set $block_sql_injections 0;
if ($query_string ~ "union.*select.*\(") {
set $block_sql_injections 1;
}
if ($query_string ~ "union.*all.*select.*") {
set $block_sql_injections 1;
}
if ($query_string ~ "concat.*\(") {
set $block_sql_injections 1;
}
if ($block_sql_injections = 1) {
return 403;
}
## Block file injections
set $block_file_injections 0;
if ($query_string ~ "[a-zA-Z0-9_]=http://") {
set $block_file_injections 1;
}
if ($query_string ~ "[a-zA-Z0-9_]=(\.\.//?)+") {
set $block_file_injections 1;
}
if ($query_string ~ "[a-zA-Z0-9_]=/([a-z0-9_.]//?)+") {
set $block_file_injections 1;
}
if ($block_file_injections = 1) {
return 403;
}
## Block common exploits
set $block_common_exploits 0;
if ($query_string ~ "(<|%3C).*script.*(>|%3E)") {
set $block_common_exploits 1;
}
if ($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{0,2})") {
set $block_common_exploits 1;
}
if ($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{0,2})") {
set $block_common_exploits 1;
}
if ($query_string ~ "proc/self/environ") {
set $block_common_exploits 1;
}
if ($query_string ~ "mosConfig_[a-zA-Z_]{1,21}(=|\%3D)") {
set $block_common_exploits 1;
}
if ($query_string ~ "base64_(en|de)code\(.*\)") {
set $block_common_exploits 1;
}
if ($block_common_exploits = 1) {
return 403;
}
## Block spam
set $block_spam 0;
if ($query_string ~ "\b(ultram|unicauca|valium|viagra|vicodin|xanax|ypxaieo)\b") {
set $block_spam 1;
}
if ($query_string ~ "\b(erections|hoodia|huronriveracres|impotence|levitra|libido)\b") {
set $block_spam 1;
}
if ($query_string ~ "\b(ambien|blue\spill|cialis|cocaine|ejaculation|erectile)\b") {
set $block_spam 1;
}
if ($query_string ~ "\b(lipitor|phentermin|pro[sz]ac|sandyauer|tramadol|troyhamby)\b") {
set $block_spam 1;
}
if ($block_spam = 1) {
return 403;
}
## 這裡是把奇怪的 user agents 擋下來
## Block user agents
set $block_user_agents 0;
# Don't disable wget if you need it to run cron jobs!
#if ($http_user_agent ~ "Wget") {
# set $block_user_agents 1;
#}
# Disable Akeeba Remote Control 2.5 and earlier
if ($http_user_agent ~ "Indy Library") {
set $block_user_agents 1;
}
# Common bandwidth hoggers and hacking tools.
if ($http_user_agent ~ "libwww-perl") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "GetRight") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "GetWeb!") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "Go!Zilla") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "Download Demon") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "Go-Ahead-Got-It") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "TurnitinBot") {
set $block_user_agents 1;
}
if ($http_user_agent ~ "GrabNet") {
set $block_user_agents 1;
}
## 符合以上特質的顯示 403 錯誤
if ($block_user_agents = 1) {
return 403;
}
## 附上檔案 deny 設定
location ~* \.(vscode|workspace|real|cfg|env|env_sample|svn|git|bak|bk|old|save|swp|svn|git|DS_Store|gitignore|disable|sample|conf) { deny all; }
location ~* /(\.git|cache|bin|logs|backup|tests)/.*$ { deny all; }
location ~* /(system|vendors)/.*\.(txt|xml|md|html|yaml|yml|php|pl|py|cgi|twig|sh|bat)$ { deny all; }
location ~* /user/.*\.(txt|md|yaml|yml|php|pl|py|cgi|twig|sh|bat)$ { deny all; }
location ~ /(LICENSE\.txt|composer\.lock|composer\.json|nginx\.conf|web\.config|htaccess\.txt|\.htaccess) { deny all; }
location ~ /(goaccess_report\.html|LICENSE\.txt|composer\.lock|composer\.json|nginx\.conf|web\.config|htaccess\.txt|\.htaccess) { deny all; }
location ~* \.(jpg|jpeg|png|css|js)$ {
expires 7d;
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment