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(CVE-2012-1675)
•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:
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Solution
Recommendations 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:
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SOLUTION
There 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):
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# listener.ora Network Configuration File: E:\oracle\product\10.2.0\db_1\NETWORK\ADMIN\listener.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:\oracle\product\10.2.0\db_1)
(PROGRAM = extproc)
(ENVS = "EXTPROC_DLLS=ANY")
)
(SID_DESC =
(GLOBAL = orcl)
(ORACLE_HOME = E:\oracle\product\10.2.0\db_1)
(SID_NAME = orcl)
)
)
ADR_BASE_LISTENER = E:\oracle
数据库监听信息,原始都是空值:
show parameter local_listener
NAME TYPE VALUE
------------------------------------ ----------- ---------------------------
local_listener string
sql> show parameter remote_listener;
NAME TYPE VALUE
------------------------------------ ----------- ---------------------------
remote_listener string
sql>
2.2 尝试应用解决方案
2.2.1 停止监听
lsnrctl stop listener
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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:
sql;">
SECURE_REGISTER_LISTENER = (TCP)
2.2.3 启动监听
启动监听:
sql;">
lsnrctl start listener
立即注册动态监听:
alter system register;
2.2.4 设置local_listener
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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 listener
LSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 21-9月 -2016 10:2
2:02
Copyright (c) 1991,2006,Oracle. All rights reserved.
sql;">
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:0
LOCAL SERVER
服务 "orcl" 包含 1 个例程。
例程 "orcl",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:0
LOCAL 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
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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。
sql;">
#SECURE_REGISTER_LISTENER = (TCP)
重启监听:
sql;">
lsnrctl stop listener
lsnrctl start listener
3.1.2 设置remote_listener后查看监听服务信息
设置remote_listener:
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:
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:
lsnrctl services listener
LSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 21-9月 -2016 10:4
4:18
Copyright (c) 1991,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",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:0
LOCAL SERVER
服务 "orcl" 包含 2 个例程。
例程 "orcl",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:0
LOCAL 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:ready
LOCAL SERVER
"DEDICATED" 已建立:0 已拒绝:0 状态:ready
REMOTE SERVER
(DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
服务 "orclXDB" 包含 1 个例程。
例程 "orcl",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: ready
DISPATCHER <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",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:ready
LOCAL SERVER
"DEDICATED" 已建立:0 已拒绝:0 状态:ready
REMOTE 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:
sql;">
SECURE_REGISTER_LISTENER = (TCP)
重启监听:
sql;">
lsnrctl stop listener
lsnrctl start listener
快速注册动态监听:
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:
lsnrctl services listener
LSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 21-9月 -2016 11:0
0:23
Copyright (c) 1991,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:0
LOCAL SERVER
例程 "orcl",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:blocked
REMOTE SERVER
(DESCRIPTION=(ADDRESS=(PROTOCOL=IPC)(KEY=EXTPROC1521)))
服务 "orclXDB" 包含 1 个例程。
例程 "orcl",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:blocked
REMOTE 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:
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21-9月 -2016 11:00:23 * (CONNECT_DATA=(CID=(PROGRAM=)(HOST=)(USER=Administrator))(COMMAND=services)(ARGUMENTS=64)(SERVICE=listener)(VERSION=169870080)) * services * 0
21-9月 -2016 11:00:54 * service_register_NSGR * 1194
TNS-01194: 监听程序命令未到达安全传输
21-9月 -2016 11:01:54 * service_register_NSGR * 1194
TNS-01194: 监听程序命令未到达安全传输
21-9月 -2016 11:02:54 * service_register_NSGR * 1194
TNS-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;
3.2.4 查看监听服务信息
lsnrctl services listener
LSNRCTL for 32-bit Windows: Version 10.2.0.3.0 - Production on 21-9月 -2016 11:2
2:17
Copyright (c) 1991,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",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:0
LOCAL SERVER
命令执行成功
4.Reference
•Using Class of Secure Transport (COST) to Restrict Instance Registration (文档 ID 1453883.1)