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1.确定解决方案

2020-02-14 03:58

环境:Windows 2008 R2 + Oracle 10.2.0.3

应用最新bundle patch后,扫描依然报出漏洞 Oracle Database Server 'TNS Listener'远程数据投毒漏洞

1.确定解决方案

2.应用解决方案

3.验证修补情况

4.Reference

1.确定解决方案

安全厂家给出的解决办法:

链接:

根据此链接得到解决方法:

SolutionRecommendations for protecting against this vulnerability can be found at:My Oracle Support Note 1340831.1 for Oracle Database deployments that use Oracle Real Application Clusters (RAC).My Oracle Support Note 1453883.1 for Oracle Database deployments that do not use RAC.

目前这里环境不是RAC,参考文档1453883.1:

Using Class of Secure Transport (COST) to Restrict Instance Registration (文档 ID 1453883.1)

找到两种解决方案:

SOLUTIONThere are two methods that can be used to protect the listener using COST "SECURE_REGISTER_listener_name =" in stand alone database installations.1) Restricting registration to the TCP protocol (Requires the fix for BUG:12880299)- or - 2) Restricting registration to the IPC protocol (The patch for BUG:12880299 is NOT required for the IPC method)Either method accomplishes the same goal but it is your choice which type to implement subject to the restriction* noted below. Both methods will be discussed.The second method (using IPC) cannot be used if the database is a member of an Oracle Data Guard broker configuration.

我这里选择第一种解决方案:

1) Restricting registration to the TCP protocol (Requires the fix for BUG:12880299)。

2.应用解决方案

2.1 确定现状

监听配置文件:listener.ora

存放路径:cd %ORACLE_HOME%/network/admin

内容(保证安全,所有IP相关信息已二次处理):

# listener.ora Network Configuration File: E:oracleproduct10.2.0db_1NETWORKADMINlistener.ora# Generated by Oracle configuration tools.LISTENER =(DESCRIPTION_LIST =(DESCRIPTION =(ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521))(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.1.138)(PORT = 1521))))SID_LIST_LISTENER =(SID_LIST =(SID_DESC =(SID_NAME = PLSExtProc)(ORACLE_HOME = E:oracleproduct10.2.0db_1)(PROGRAM = extproc)(ENVS = "EXTPROC_DLLS=ANY"))(SID_DESC =(GLOBAL = orcl)(ORACLE_HOME = E:oracleproduct10.2.0db_1)(SID_NAME = orcl)))ADR_BASE_LISTENER = E:oracle 

数据库监听信息,原始都是空值:

SQL show parameter local_listenerNAME TYPE VALUE------------------------------------ ----------- ---------------------------local_listener stringSQL show parameter remote_listener;NAME TYPE VALUE------------------------------------ ----------- ---------------------------remote_listener stringSQL 

2.2 尝试应用解决方案

2.2.1 停止监听

lsnrctl stop listener

2.2.2 修改监听配置文件

Add the COST TCP protocol restriction "SECURE_REGISTER_[listener_name] = (TCP)" to the listener.ora.Match the COST parameter variable listener_name with the name of the listener you are using in the listener.ora, e.g., If your listener name is "LISTENER_PROD" then use SECURE_REGISTER_LISTENER_PROD = (TCP)

实际修改过程:

切换到监听配置文件所在路径:

cd %ORACLE_HOME%/network/admin

直接修改listener.ora文件,在文件的末尾添加一行:

SECURE_REGISTER_LISTENER = (TCP) 

2.2.3 启动监听

启动监听:

lsnrctl start listener

立即注册动态监听:

SQL alter system register;

2.2.4 设置local_listener

alter system set local_listener='(DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST =192.168.1.138)(PORT = 1521)))' scope = both;show parameter local_listener 

2.2.5 查看监听服务信息

lsnrctl services listenerE:oracleproduct10.2.0db_1networkADMINlsnrctl services listenerLSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 21-9月 -2016 10:22:02Copyright (c) 1991, 2006, Oracle. All rights reserved.

正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))服务摘要..服务 "PLSExtProc" 包含 1 个例程。例程 "PLSExtProc", 状态 UNKNOWN, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:0 已被拒绝:0LOCAL SERVER服务 "orcl" 包含 1 个例程。例程 "orcl", 状态 UNKNOWN, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:3 已被拒绝:0LOCAL SERVER命令执行成功 

3.验证修补情况

3.1 注释COST规则验证监听情况

3.1.1 注释掉listener.ora文件的COST规则并重启监听

Comment the COST rule in listener.ora and restart the listener.

直接修改listener.ora文件,在之前添加的一行前面加上"#"注释此行。

#SECURE_REGISTER_LISTENER = (TCP) 

重启监听:

lsnrctl stop listenerlsnrctl start listener 

3.1.2 设置remote_listener后查看监听服务信息

设置remote_listener:

SQL alter system set remote_listener='(ADDRESS = (PROTOCOL = TCP)(HOST =192.168.1.138)(PORT = 1521))' scope=memory;SQL show parameter remote_listener 

快速动态监听注册:

SQL alter system register; 

查看监听服务信息,发现有“REMOTE SERVER”字样,说明此时漏洞存在:

E:oracleproduct10.2.0db_1networkADMINlsnrctl services listenerLSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 21-9月 -2016 10:44:18Copyright (c) 1991, 2006, Oracle. All rights reserved.正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))服务摘要..服务 "PLSExtProc" 包含 1 个例程。例程 "PLSExtProc", 状态 UNKNOWN, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:0 已被拒绝:0LOCAL SERVER服务 "orcl" 包含 2 个例程。例程 "orcl", 状态 UNKNOWN, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:0 已被拒绝:0LOCAL SERVER例程 "orcl", 状态 READY, 包含此服务的 2 个处理程序...处理程序:"DEDICATED" 已建立:0 已拒绝:0 状态:readyLOCAL SERVER"DEDICATED" 已建立:0 已拒绝:0 状态:readyREMOTE SERVER(DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))服务 "orclXDB" 包含 1 个例程。例程 "orcl", 状态 READY, 包含此服务的 1 个处理程序...处理程序:"D000" 已建立:0 已被拒绝:0 当前: 0 最大: 1002 状态: readyDISPATCHER machine: INSPUR-IRMS-138, pid: 6728(ADDRESS=(PROTOCOL=tcp)(HOST=INSPUR-IRMS-138)(PORT=52676))服务 "orcl_XPT" 包含 1 个例程。例程 "orcl", 状态 READY, 包含此服务的 2 个处理程序...处理程序:"DEDICATED" 已建立:0 已拒绝:0 状态:readyLOCAL SERVER"DEDICATED" 已建立:0 已拒绝:0 状态:readyREMOTE SERVER(DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))命令执行成功 

3.2 取消注释COST规则验证监听情况

3.2.1 取消注释COST规则重启监听并快速注册,验证监听服务信息

去掉监听文件末尾行前的“#”号:

SECURE_REGISTER_LISTENER = (TCP) 

重启监听:

lsnrctl stop listenerlsnrctl start listener 

快速注册动态监听:

SQL alter system register; 

验证监听服务信息,按官档描述,正常应该没有“REMOTE SERVER”字样:

E:oracleproduct10.2.0db_1networkADMINlsnrctl services listenerLSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 21-9月 -2016 11:00:23Copyright (c) 1991, 2006, Oracle. All rights reserved.正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))服务摘要..服务 "PLSExtProc" 包含 1 个例程。例程 "PLSExtProc", 状态 UNKNOWN, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:0 已被拒绝:0LOCAL SERVER服务 "orcl" 包含 2 个例程。例程 "orcl", 状态 UNKNOWN, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:1 已被拒绝:0LOCAL SERVER例程 "orcl", 状态 READY, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:0 已拒绝:0 状态:blockedREMOTE SERVER(DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))服务 "orclXDB" 包含 1 个例程。例程 "orcl", 状态 READY, 包含此服务的 1 个处理程序...处理程序:"D000" 已建立:0 已被拒绝:0 当前: 0 最大: 1002 状态: readyDISPATCHER machine: INSPUR-IRMS-138, pid: 6728(ADDRESS=(PROTOCOL=tcp)(HOST=INSPUR-IRMS-138)(PORT=52676))服务 "orcl_XPT" 包含 1 个例程。例程 "orcl", 状态 READY, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:0 已拒绝:0 状态:blockedREMOTE SERVER(DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))命令执行成功 实际发现有“REMOTE SERVER”字样,但是对应的监听都是blocked.

3.2.2 查看监听日志

cd %ORACLE_HOME%/network/log

listener.log日志文件已经有TNS-01194信息,跟官档一致:

21-9月 -2016 11:00:23 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=Administrator))(COMMAND=services)(ARGUMENTS=64)(SERVICE=listener)(VERSION=169870080)) * services * 021-9月 -2016 11:00:54 * service_register_NSGR * 1194TNS-01194: 监听程序命令未到达安全传输21-9月 -2016 11:01:54 * service_register_NSGR * 1194TNS-01194: 监听程序命令未到达安全传输21-9月 -2016 11:02:54 * service_register_NSGR * 1194TNS-01194: 监听程序命令未到达安全传输

3.2.3 还原remote_listener设置

测试完成,还原remote_listener设置

alter system set remote_listener='' scope=memory;SQL alter system set remote_listener='' scope=memory; 

3.2.4 查看监听服务信息

E:oracleproduct10.2.0db_1networkADMINlsnrctl services listenerLSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 21-9月 -2016 11:22:17Copyright (c) 1991, 2006, Oracle. All rights reserved.正在连接到 (DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))服务摘要..服务 "PLSExtProc" 包含 1 个例程。例程 "PLSExtProc", 状态 UNKNOWN, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:0 已被拒绝:0LOCAL SERVER服务 "orcl" 包含 1 个例程。例程 "orcl", 状态 UNKNOWN, 包含此服务的 1 个处理程序...处理程序:"DEDICATED" 已建立:1 已被拒绝:0LOCAL SERVER命令执行成功

4.Reference

Using Class of Secure Transport (COST) to Restrict Instance Registration (文档 ID 1453883.1)

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