Tag Archives: F-Secure Radar

Vulnerability Management for Network Perimeter

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Vulnerability Management for Network Perimeter. Network Perimeter is like a door to your organization. It is accessible to everyone and vulnerability exploitation does not require any human interactions, unlike, for example, phishing attacks. Potential attacker can automate most of his actions searching for an easy target. It’s important not to be such of target. 😉

Vulnerability Management for Network Perimeter

What does it mean to control the network perimeter? Well, practically this process consist of two main parts:

  • Assessing network hosts that are facing Internet using some Network Scanner (Nessus, OpenVAS, Qualys, MaxPatrol. F-Secure Radar, etc.)
  • Assessing application servers, e.g. Web Servers, on these hosts using some special tools, e.g. Web Application Scanners (Acunetix, Burp Suite, Qualys WAS, Tenable.io WAS, High-Tech Bridge ImmuniWeb, etc.)

Active scanning is a good method of perimeter assessment. Dynamics of the assets is relatively low, comparing with the Office Network. Perimeter hosts usually stays active all the time, including the time when you are going to scan scanning them. 😉

Most of the dangerous vulnerabilities can be detected without authorization: problems with encryption (OpenSSL Heartbleed, Poodle, etc.). RCE and DoS of web servers and frameworks (Apache Struts and Equifax case)

The best results can be achieved with scanners deployed outside of your network. Thus, you will see your Network Perimeter the same way a potential attacker sees it. But certainly, you will be in a better position:

  • You can ask your IT administrators to add your network and WAS scanners in white list, so they will not be banned.
  • You can check and correlate scan results of remote scanner with (authenticated?) scan results produced by the scanner deployed in your organization’s network and thus filtering false positives.

What about the targets for scanning? How should you get them?

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F-Secure API for scanning

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F-Secure API for scanning. This post will be about API of F-Secure Radar. API become a crucial feature when you have to scan a range of thousands hosts and you can’t just add it in one Vulnerability Scanning task. As I mentioned earlier in “F-Secure Radar Vulnerability Management solution” Vulnerability Scanning in Radar is for known active IPs only, for ranges – Discovery Scans. Basically, in F-Secure Radar there is always one vulnerability scan for one host. Unusual concept, but it have some advantages. And it’s quite convenient when you work with Radar via API.

So, my plan for this post is to get active IPs from discovery scan report, create vulnerability scans, run them and get reports. All using API.

To use API you need to get API key at “F-Secure Radar -> Settings -> My profile”.

F-Secure Radar API key

To check that API is working we may send a request:

GET /v1/Scans/Types HTTP/1.1
Host: api.radar.f-secure.com
Content-Type: application/json; charset=utf-8
UserName: radar_user@corporation.com
APIKey: JDOBH9MV24ZOENMS94QCO8QP

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F-Secure Radar ticketing

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F-Secure Radar ticketing. I personally don’t use ticketing systems integrated in VM solutions. I think it’s hard to explain IT guys why they should use yet another ticketing system for patching tasks only additionally to their main Jira or whatever they use (see “Vulnerability scanners: a view from the vendor and end user side“).

But I assume that for some companies this feature may be useful or even critical.

Anyway, it’s always nice to see how the vendor works with vulnerability data to get some ideas for own ticketing procedures (see “VM Remediation using external task tracking systems“).

In F-Secure Radar you can create tickets at “Vulnerabilities” tabs. Here is the a whole list of detected vulnerabilities (filtered by CVSS > 8 by default).

F-Secure Ticketing

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F-Secure Radar basic reporting

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F-Secure Radar basic reporting. In previous post about Radar (“F-Secure Radar Vulnerability Management solution“) I was describing how to use it for authenticated and unauthenticated scanning both inside and outside of your network.

But what about the vulnerability reports?

To get vulnerability report you should open Reporting Tab. As you can see, Radar supports reports for single scan results and summary reports. I don’t actually a big fan of standard vulnerability summary reports, because in practice you will always need to change something in them, and it’s impossible in most cases.

F-Secure Radar reports

I have filtered only Linux OS scans using filter. You can also filter by friendly name (some id, that you can set manually), host name/ip , time of scanning, responsible person, severity level, scan group or even by scan tags.

Radar Filters

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F-Secure Radar Vulnerability Management solution

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F-Secure Radar Vulnerability Management solution. In this blog I am writing mainly about VM market leaders. Most of them are US-based companies. However, there are vulnerability management solutions that are popular only in some particular country or region. About some of them you maybe have not even heard. At the same time, these solutions are rather interesting.

F-Secure Radar Dashboards

Vulnerability Scanner I want to present today, was initially developed by nSence company from Espoo, Finland. It was named “Karhu”, a “bear” in Finnish. In June 2015 antivirus company F-Secure has bought nSense and formed it’s Cyber Security Services department. The scanner was renamed in F-Secure Radar. Not to be confused with IBM QRadar SIEM 😉

Solution structure is similar to Qualys and Nessus Cloud. There is a remote server that provides a web interface: portal.radar.f-secure.com. You can scan your perimeter using the remote scanner. To scan the hosts within the network, you should deploy the Scan Node Agent on a Windows host.

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