Search Google Appliance

Home >> Information Security >> Vulnerability Scanning

Vulnerability Scanning

OxCERT offers automated technical vulnerability scans to the collegiate-University free of charge as part of its beta service for offensive security. This service is currently available for free and scans systems recurrently every four weeks. You are able to pick a time and day that suits their schedule. After the scan has been completed OxCERT provides a set of reports which list discovered vulnerabilities in the scanned systems. Reports are available as HTML, PDF, and CSV and can be explored interactively using SAVANT. OxCERT provides on request recommendations and advice on which vulnerabilities should be prioritised.

Table of contents

  1. How to sign-up for free regular scans
  2. How to dynamically explore scan results in SAVANT
  3. How to access the PDF and HTML reports

How to sign-up for free regular scans?

If you would like to sign-up for free regular scans, please contact oxcert@infosec.ox.ac.uk and provide the following information:

  1. What is the IP address range that you would like to scan? (We would prefer to scan your entire subnet.)
  2. We propose to do a schedule every 4 weeks at a certain weekday (Mon-Fri). The scan typically starts at a specific time, but if there is already a scan running, it may start slightly later. Do you have a preference for a weekday and a time?


  3. Please provide the email addresses and SSO usernames of the users who will need access to the vulnerability scan reports.

Also, please confirm you have reviewed the following points:


  1. The vulnerability scan is likely to result in an increase in system logging, such as firewall, web server or intrusion detection systems. Please make sure that sufficient storage is provisioned.
  2. Appropriate backups have been made for all critical systems within the scope of the scan.
  3. All stakeholders have been informed of the time of the scan and any appropriate local procedures have been followed.
  4. Emergency disaster recovery procedures are in place.

How to dynamically explore scan results in SAVANT

OxCERT recommends that you use SAVANT (link to page about SAVANT) to interactively explore your data using the provided dashboards and visualisations.

  1. SAVANT can be accessed via https://savant.infosec.ox.ac.uk
  2. Choose 'Tenants' in the main menu bar on the left and click 'Show Dashboards' in the row for the 'Global' tenancy.
  3. Now you will see all dashboards provided by OxCERT to the collegiate University. There are several dashboards related to vulnerability scanning:
    • Vulnerability (the main dashboard to explore a single scan)
    • Vulnerability - Small Screen (optimised for smaller displays)
    • Vulnerability over time (time based analysis of vulnerability scanning results)

A good starting point on the main vulnerability dashboard is identifying any critical and high-risk vulnerabilities on your systems and working on remediating these first before tackling the other vulnerabilities. The heat-map visualisation in SAVANT is designed to aid you in identifying the quick wins where you can replicate a change to multiple systems affection by the same vulnerability. If you can’t wait to get an updated report, please let us know by responding to any of these messages and we will run and manual scan for you.

SAVANT is still under active development and we regard them as a public beta. We encourage you to provide any feedback and suggestions – it would be of great help!

How to access the PDF and HTML reports

Once the scans have run, we collect three separate reports:

  • An executive summary, which lists all the vulnerabilities identified by the scan. These are sorted in order of severity (High, Medium, Low and Informational). Vulnerabilities are colour coded and have CVSS scores (values in the range 0 to 10).
  • A report detailing vulnerabilities ordered by host is also provided. For each host, the vulnerabilities are ordered by the severity. This allows the user to focus on the action required to secure an individual host.
  • The final report sent will detail vulnerabilities ordered by Nessus plugin (or vulnerability). This report will allow the user to focus on a particular type of vulnerability seen across a myriad of hosts.

These reports will be uploaded to an SSO-accessed site for designated ITSS officers to view and download. A link to this site will be provided upon completion of the scan. All previous scan reports can be accessed via this site.

A good starting point is identifying any critical and high-risk vulnerabilities on your systems and working on remediating these first before tackling the other vulnerabilities. If you can’t wait to get an updated report, please let us know by responding to any of these messages and we will run and manual scan for you.\

 

Written by IT Services. Latest revision 29 March 2019