Zeppelin启用https过程和Hack内核以满足客户需求的记录。
原因是这客户很有意思,该客户中国分公司的人为了验证内网安全性,从国外找了一个渗透测试小组对Zeppelin和其他产品进行黑客测试,结果发现Zeppelin主要俩问题,一个是在内网没用https,一个是zeppelin里面可以执行shell命令和python语句。其实这不算大问题,zeppelin本来就是干这个用的。但是渗透小组不了解zeppelin是做什么的,认为即使在内网里,执行shell命令能查看操作系统的一些文件是大问题,然后发生的事就不说了,不是我们的问题了。
不过既然他们要求整改,我们也只好配合,虽然大家都觉得内网域名加https属于脱了裤子放屁,然后不让zeppelin干他本来应该干的事就更过分了,但鉴于客户是甲方,也只好hack源码了。
于是某个周末用了4个小时完成所有工作。
先记录下zeppelin加https访问,我们有自己的域名证书,所以直接用即可。如果没有域名证书,需要自签发,那么可以看第二部分,双向认证步骤。
https第一部分,已有域名添加jks:
openssl pkcs12 -export -in xxx.com.crt -inkey xxx.com.key -out xxx.com.pkcs12 keytool -importkeystore -srckeystore xxx.com.pkcs12 -destkeystore xxx.com.jks -srcstoretype pkcs12
https第二部分,自签发证书双向认证添加jks
# 生成root私钥和证书文件。 openssl genrsa -out root.key(pem) 2048 # Generate root key file openssl req -x509 -new -key root.key(pem) -out root.crt # Generate root cert file # 创建客户端私钥和证书以及证书请求文件csr openssl genrsa -out client.key(pem) 2048 # Generate client key file openssl req -new -key client.key(pem) -out client.csr # Generate client cert request file openssl x509 -req -in client.csr -CA root.crt -CAkey root.key(pem) -CAcreateserial -days 3650 -out client.crt # Use root cert to generate client cert file # 生成服务器端私钥,证书和证书请求文件csr openssl genrsa -out server.key(pem) 2048 # Generate server key file, use in Zeppelin openssl req -new -key server.key(pem) out server.csr @ Generate server cert request file openssl x509 -req -in server.csr -CA root.crt -CAkey root.key(pem) -CAcreateserial -days 3650 -out server.crt # Use root cert to generate server cert file # 生成客户端端jks文件 openssl pkcs12 -export -in client.crt -inkey client.key(pem) -out client.pkcs12 # Package to pkcs12 format, must input a password, you should remember the password keytool -importkeystore -srckeystore client.pkcs12 -destkeystore client.jks -srcstoretype pkcs12 # The client password you just input at last step # 生成服务器端jks文件 openssl pkcs12 -export -in server.crt -inkey server.key(pem) -out server.pkcs12 @ Package to pkcs12 format, must input a password, you should remember the password keytool -importkeystore -srckeystore server.pkcs12 -destkeystore server.jks -srcstoretype pkcs12 # The server password you just input at last step
如果是不需要双向认证,只要单向自签发,不创建客户端的各种就可以了。
然后找个地把这些文件放过去,再修改zeppelin配置即可。
mkdir -p /etc/zeppelin/conf/ssl cp server.crt server.jks /etc/zeppelin/conf/ssl
<property> <name>zeppelin.server.ssl.port</name> <value>8443</value> <description>Server ssl port. (used when ssl property is set to true)</description> </property> <property> <name>zeppelin.ssl</name> <value>true</value> <description>Should SSL be used by the servers?</description> </property> <property> <name>zeppelin.ssl.client.auth</name> <value>false</value> <description>Should client authentication be used for SSL connections?</description> </property> <property> <name>zeppelin.ssl.keystore.path</name> <value>/etc/zeppelin/conf/ssl/xxx.com.jks</value> <description>Path to keystore relative to Zeppelin configuration directory</description> </property> <property> <name>zeppelin.ssl.keystore.type</name> <value>JKS</value> <description>The format of the given keystore (e.g. JKS or PKCS12)</description> </property> <property> <name>zeppelin.ssl.keystore.password</name> <value>password which you input on generating server jks step</value> <description>Keystore password. Can be obfuscated by the Jetty Password tool</description> </property>
然后反代那里也加上443的ssl证书以及443转8443的upstream即可。
然后是hack zeppelin源码加入关键字限制,这个确实找了一小会zeppelin发送执行源码给interpreter的地方,zeppelin架构比较清晰,但是代码挺复杂的,用到了很多小花活儿。比如thrift,interpreter脚本里建立nc监听。然后各个解释器插件用socket跟interpreter脚本通信,前端angular,后端jetty,还用shiro做验证和授权。回头可以单开好几篇说说zeppelin安装,使用和详细配置,做这项目基本把zeppelin摸透了。
找到发送前端编写内容给interpreter的java代码,然后用很生硬的办法限制执行命令。具体那个.java文件的名字我就不说了,有悬念有惊喜。我不写java,只负责读源码找到代码位置,hack的java是同事写的。然后编译,替换jar包,完成。后面改了改配置,后续的渗透测试顺利通过。
static HashSet<String[]> blockedCodeString = new HashSet<>(); static { blockedCodeString.add(new String[]{"import", "os"}); blockedCodeString.add(new String[]{"import", "sys"}); blockedCodeString.add(new String[]{"import", "subprocess"}); blockedCodeString.add(new String[]{"import", "pty"}); blockedCodeString.add(new String[]{"import", "socket"}); blockedCodeString.add(new String[]{"import", "commands"}); blockedCodeString.add(new String[]{"import", "paramiko"}); blockedCodeString.add(new String[]{"import", "pexpect"}); blockedCodeString.add(new String[]{"import", "BaseHTTPServer"}); blockedCodeString.add(new String[]{"import", "ConfigParser"}); blockedCodeString.add(new String[]{"import", "platform"}); blockedCodeString.add(new String[]{"import", "popen2"}); blockedCodeString.add(new String[]{"import", "copy"}); blockedCodeString.add(new String[]{"import", "SocketServer"}); blockedCodeString.add(new String[]{"import", "sysconfig"}); blockedCodeString.add(new String[]{"import", "tty"}); blockedCodeString.add(new String[]{"import", "xmlrpmlib"}); blockedCodeString.add(new String[]{"etc"}); blockedCodeString.add(new String[]{"boot"}); blockedCodeString.add(new String[]{"dev"}); blockedCodeString.add(new String[]{"lib"}); blockedCodeString.add(new String[]{"lib64"}); blockedCodeString.add(new String[]{"lost+found"}); blockedCodeString.add(new String[]{"mnt"}); blockedCodeString.add(new String[]{"proc"}); blockedCodeString.add(new String[]{"root"}); blockedCodeString.add(new String[]{"sbin"}); blockedCodeString.add(new String[]{"selinux"}); blockedCodeString.add(new String[]{"usr"}); blockedCodeString.add(new String[]{"passwd"}); blockedCodeString.add(new String[]{"useradd"}); blockedCodeString.add(new String[]{"userdel"}); blockedCodeString.add(new String[]{"rm"}); blockedCodeString.add(new String[]{"akka "}); blockedCodeString.add(new String[]{"groupadd"}); blockedCodeString.add(new String[]{"groupdel"}); blockedCodeString.add(new String[]{"mkdir"}); blockedCodeString.add(new String[]{"rmdir"}); blockedCodeString.add(new String[]{"ping"}); blockedCodeString.add(new String[]{"nc"}); blockedCodeString.add(new String[]{"telnet"}); blockedCodeString.add(new String[]{"ftp"}); blockedCodeString.add(new String[]{"scp"}); blockedCodeString.add(new String[]{"ssh"}); blockedCodeString.add(new String[]{"ps"}); blockedCodeString.add(new String[]{"hostname"}); blockedCodeString.add(new String[]{"uname"}); blockedCodeString.add(new String[]{"vim"}); blockedCodeString.add(new String[]{"nano"}); blockedCodeString.add(new String[]{"top"}); blockedCodeString.add(new String[]{"cat"}); blockedCodeString.add(new String[]{"more"}); blockedCodeString.add(new String[]{"less"}); blockedCodeString.add(new String[]{"chkconfig"}); blockedCodeString.add(new String[]{"service"}); blockedCodeString.add(new String[]{"netstat"}); blockedCodeString.add(new String[]{"iptables"}); blockedCodeString.add(new String[]{"ip"}); blockedCodeString.add(new String[]{"route "}); blockedCodeString.add(new String[]{"curl"}); blockedCodeString.add(new String[]{"wget"}); blockedCodeString.add(new String[]{"sysctl"}); blockedCodeString.add(new String[]{"touch"}); blockedCodeString.add(new String[]{"scala.sys.process"}); blockedCodeString.add(new String[]{"0.0.0.0"}); blockedCodeString.add(new String[]{"git"}); blockedCodeString.add(new String[]{"svn"}); blockedCodeString.add(new String[]{"hg"}); blockedCodeString.add(new String[]{"cvs"}); blockedCodeString.add(new String[]{"exec"}); blockedCodeString.add(new String[]{"ln"}); blockedCodeString.add(new String[]{"kill"}); blockedCodeString.add(new String[]{"rsync"}); blockedCodeString.add(new String[]{"lsof"}); blockedCodeString.add(new String[]{"crontab"}); blockedCodeString.add(new String[]{"libtool"}); blockedCodeString.add(new String[]{"automake"}); blockedCodeString.add(new String[]{"autoconf"}); blockedCodeString.add(new String[]{"make"}); blockedCodeString.add(new String[]{"gcc"}); blockedCodeString.add(new String[]{"cc"}); } static boolean allMatch(String aim, String[] checker){ if(checker == null || checker.length < 1){ return false; }else { // by default, treat as match, every not match change it for (String i : checker) { if (!aim.matches(".*\\b" + i + "\\b.*")){ return false; } } return true; } } static String anyMatch(String aim, HashSet<String[]> all) throws Exception{ if(aim.contains("FUCK P&G")){ throw new Exception("How do you know this ????"); } else { for (String[] one : all) { if (allMatch(aim, one)) { StringBuilder sb = new StringBuilder(); for (String s : one) { sb.append(s + " "); } return sb.toString(); } } throw new Exception("No one match"); } } //......此处是个public类 try{ String matchesStrings = anyMatch(st, blockedCodeString); result = new InterpreterResult(Code.ERROR, "Contains dangerous code : " + matchesStrings); }catch (Exception me){ // no match any scheduler.submit(job); while (!job.isTerminated()) { synchronized (jobListener) { try { jobListener.wait(1000); } catch (InterruptedException e) { logger.info("Exception in RemoteInterpreterServer while interpret, jobListener.wait", e); } } } if (job.getStatus() == Status.ERROR) { result = new InterpreterResult(Code.ERROR, Job.getStack(job.getException())); } else { result = (InterpreterResult) job.getReturn(); // in case of job abort in PENDING status, result can be null if (result == null) { result = new InterpreterResult(Code.KEEP_PREVIOUS_RESULT); } } } //......直到该public类结束
因为客户有deadline限制,所以快速定位源码位置的过程还是挺有意思的,比较紧张刺激,在这个以小时计算deadline压力下,什么intelliJ, Eclipse都不好使啊,就grep和vi最好用,从找到到改完,比客户定的deadline提前了好几个小时。
本文出自 “实践检验真理” 博客,谢绝转载!
原文地址:http://slaytanic.blog.51cto.com/2057708/1978521