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Description

Nmap script that provides information about probable vulnerabilities based on discovered services.

Contents:

Technical details

The current implementation take care of the following cases:

  • If Nmap detects:

    • cpe AND version: vulnerabilities affecting version and vulnerabilities affecting a range of versions that include version.
    • cpe AND version range: vulnerabilities affecting versions between version range (included).
    • cpe but NO version: vulnerabilities that affect every version of the product.
    • If no vulnerabilities were found with cpe and version returned from Nmap, HTTP detection is used.
    • NO cpe: HTTP detection is used.

  • HTTP detection:

    • Used only if port matches HTTP/SSL/UPnP.
    • An HTTP GET request is sent for every combination of path and extension in extra/http-paths-vulnerscom.json, comparing the request headers/body with the regexes in extra/http-regex-vulnerscom.json.
    • Finally, the home page html is analyzed in search for library paths. The script tries to obtain the name and version from library location; then does an HTTP GET to that path in order to inspect the code of the library and analyze the starting commenot looking for the version.

Nmap library shortport is used to detect if port matches HTTP/SSL.

Requirements

In order to run cvescannerv2 script, you need the following files present in your working directory

  • CVE database: cve.db
  • Paths file: extra/http-paths-vulnerscom.json
  • Regex file: extra/http-regex-vulnerscom.json
  • Product-aliases file: extra/product-aliases.json

In addition, you must have installed lua-sql-sqlite3 (ubuntu) or lua5.4-sql-sqlite3 (alpine) packages

Optional

If you don't have the database cve.db, you can build it using the script extra/database.py or download a (semiupdated) copy from CVEScannerV2DB using .sql files or under Actions->Latest->Summary->Artifacts

This repository is updated every two weeks

pip install -r extra/requirements.txt
python extra/database.py
git clone https://github.com/scmanjarrez/CVEScannerV2DB
cd CVEScannerV2DB && sh build.sh

Note: In order to execute extra/database.py, you need to request an API key and save it to a file named .api on your current working directory or in the environment variable NVD_KEY.

Execution

To run the script, use the following syntax

nmap -sV --script cvescannerv2 <TARGET>
nmap -sV --script cvescannerv2 --script-args log=logfile.log,json=logfile.json <TARGET>

It is possible to modify the behaviour to some extent using the following arguments: db, maxcve, http, maxredirect, log, json, path, regex, aliases, service and version.

script-args default values 
db: cve.db
maxcve: 10
http: 1
maxredirect: 1
log: cvescannerv2.log
json: cvescannerv2.json
path: extra/http-paths-vulnerscom.json
regex: extra/http-regex-vulnerscom.json
aliases: extra/product-aliases.json
service: all
version: all
script-args examples 
nmap -sV --script cvescannerv2 --script-args db=cve.db <TARGET>
nmap -sV --script cvescannerv2 --script-args maxcve=5 <TARGET>

# Change reports path
nmap -sV --script cvescannerv2 --script-args log=scan2023.log,json=scan2023.json <TARGET>

# Only scan certain service/version
nmap -sV --script cvescannerv2 --script-args service=http_server,version=2.4.57 <TARGET>

# Disable HTTP detection
nmap -sV --script cvescannerv2 --script-args http=0 <TARGET>

Note: cvescannerv2.nse can be placed in Nmap default script directory for global execution.

  • Linux and OSX default script locations:

    • /usr/local/share/nmap/scripts/
    • /usr/share/nmap/scripts/
    • /opt/local/share/nmap/scripts/
    • /usr/local/Cellar/nmap/<version>/share/nmap/scripts/

  • Windows default script locations:

    • C:\Program Files\Nmap\Scripts
    • %APPDATA%\nmap

It's recommended to create a symbolic link, so changes in repository are reflected in the script.

Output

CVEScannerV2 will show CVEs related to every service-version discovered.

Note: This script depends on heuristics implemented in Nmap, so if it doesn't detect a service or is detected incorrectly, CVEScannerV2 will show an incorrect output.

Nmap output 
PORT      STATE    SERVICE        VERSION
22/tcp    open  ssh                  OpenSSH 7.1 (protocol 2.0)
| cvescannerv2:
|   product: openssh
|   version: 4.7
|   vupdate: p1
|   cves: 38
|   	CVE ID              	CVSSv2	CVSSv3	ExploitDB 	Metasploit
|   	CVE-2016-1908       	7.5  	9.8  	No        	No
|   	CVE-2023-38408      	nil  	9.8  	No        	No
|       ...
|   	CVE-2016-6515       	7.8  	7.5  	Yes       	No
|_
...
...
3306/tcp  open  mysql                MySQL 5.5.20-log
| cvescannerv2:
|   product: mysql
|   version: 5.0.51
|   vupdate: a
|   cves: 212
|   	CVE ID              	CVSSv2	CVSSv3	ExploitDB 	Metasploit
|   	CVE-2009-2446       	8.5  	-    	No        	No
|       ...
|   	CVE-2009-4484       	7.5  	-    	No        	Yes
|   	CVE-2008-0226       	7.5  	-    	No        	Yes
|_
...
...

Log file *.log contains every exploit/metasploit found.

cvescannerv2.log 
## 2023-08-26T14:38:30+00:00

[*] host: 192.168.69.129
[*] port: 22
[+] protocol: tcp
[+] service: ssh
[+] cpe: cpe:/a:openbsd:openssh:4.7p1
[+] product: openssh
[+] version: 4.7
[+] vupdate: p1
[+] cves: 38
[-] 	id: CVE-2016-1908     	cvss_v2: 7.5  	cvss_v3: 9.8
[-] 	id: CVE-2023-38408    	cvss_v2: nil  	cvss_v3: 9.8
...
[-] 	id: CVE-2016-6515     	cvss_v2: 7.8  	cvss_v3: 7.5
[!] 		ExploitDB:
[#] 			name: nil
[#] 			id: 40888
[#] 			url: https://www.exploit-db.com/exploits/40888
[-] 	id: CVE-2010-4478     	cvss_v2: 7.5  	cvss_v3: -
...
-------------------------------------------------
[*] host: 192.168.69.129
[*] port: 3306
[+] protocol: tcp
[+] service: mysql
[+] cpe: cpe:/a:mysql:mysql:5.0.51a-3ubuntu5
[+] product: mysql
[+] version: 5.0.51
[+] vupdate: a
[+] cves: 212
[-] 	id: CVE-2009-2446     	cvss_v2: 8.5  	cvss_v3: -
...
[-] 	id: CVE-2009-4484     	cvss_v2: 7.5  	cvss_v3: -
[!] 		Metasploit:
[#] 			name: exploit/linux/mysql/mysql_yassl_getname
[-] 	id: CVE-2008-0226     	cvss_v2: 7.5  	cvss_v3: -
[!] 		Metasploit:
[#] 			name: exploit/linux/mysql/mysql_yassl_hello
[#] 			name: exploit/windows/mysql/mysql_yassl_hello
...

Log file *.json contains the same information but formatted as json

cvescannerv2.json 
{
  "192.168.69.129": {
    "ports": {
      "22/tcp": {
        "services": [
          {
            "vupdate": "p1",
            "vulnerabilities": {
              "total": 38,
              "info": "scan",
              "cves": {
                "CVE-2014-1692": {
                  "cvssv2": 7.5,
                  "cvssv3": "-"
                },
                ...
                "CVE-2016-6210": {
                  "cvssv3": 5.9,
                  "exploitdb": [
                    {
                      "id": 40113,
                      "url": "https://www.exploit-db.com/exploits/40113"
                    },
                    {
                      "id": 40136,
                      "url": "https://www.exploit-db.com/exploits/40136"
                    }
                  ],
                  "metasploit": [
                    {
                      "name": "auxiliary/scanner/ssh/ssh_enumusers"
                    }
                  ],
                  "cvssv2": 4.3
                },
              }
              ...
            },
            "cpe": "cpe:/a:openbsd:openssh:4.7p1",
            "name": "ssh",
            "version": "4.7",
            "product": "openssh"
          }
        ]
      },
      ...
    "timestamp": "2023-08-26T14:38:30+00:00"
  }
}

You can find the full output of metasploitable2/3 in example_data.

Errors and fixes

Blocked IP

Connection timeout/error during CRAWL phase (database.py)

Fix: Wait 15 minutes before re-running database.py.

Missing luasql

cvescannerv2.nse:54: module 'luasql.sqlite3' not found:
NSE failed to find nselib/luasql/sqlite3.lua in search paths.
...

Fix: Install the library based on your OS (check Requirements) and create a symlink to Nmap search path.

apt install lua-sql-sqlite3
ln -s /usr/lib/x86_64-linux-gnu/lua /usr/local/lib/lua
apk add --no-cache lua5.4-sql-sqlite3
ln -s /usr/lib/lua /usr/local/lib/lua

Above commands may require super user permissions.

Docker container

We have prepared two containers configured and ready to be used, you can download them from DockerHub

  • Database embedded version: scmanjarrez/cvescanner:db or scmanjarrez/cvescanner:latest
  • No database: scmanjarrez/cvescannerv2:nodb
docker run -v /tmp/cvslogs:/tmp/cvslogs scmanjarrez/cvescanner --script-args log=/tmp/cvslogs/scan.log,json=/tmp/cvslogs/scan.json <TARGET>

docker run -v ./cve.db:/CVEScannerV2/cve.db -v /tmp/cvslogs:/tmp/cvslogs scmanjarrez/cvescanner:nodb --script-args log=/tmp/cvslogs/cvescannerv2.log,json=/tmp/cvslogs/cvescannerv2.json <TARGET>

Note: You can find your logs in /tmp/cvslogs directory

Acknowledgements

This work has been supported by National R&D Project TEC2017-84197-C4-1-R and by the Comunidad de Madrid project CYNAMON P2018/TCS-4566 and co-financed by European Structural Funds (ESF and FEDER)

License

CVEScannerV2  Copyright (C) 2021-2024 Sergio Chica Manjarrez @ pervasive.it.uc3m.es.
Universidad Carlos III de Madrid.
This program comes with ABSOLUTELY NO WARRANTY; for details check below.
This is free software, and you are welcome to redistribute it
under certain conditions; check below for details.

LICENSE