Monthly Archives: November 2016

Getting public IP address ranges for an organization

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Getting public IP address ranges for an organization. Small bash script to automate the work with Qrator Radar public API.

Qrator Radar

The idea is to get autonomous system (AS) number of the organization by it’s name and retrieve all related IPv4 Prefixes. Why you may need it? To be sure, for example, that you scan all the hosts of organization available from the Internet for vulnerability management, penetration testing or bug bounty activity. For smaller organizations that don’t have own AS that obviously will not work.

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Fast comparison of Nessus and OpenVAS knowledge bases

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Fast comparison of Nessus and OpenVAS knowledge bases. In my opinion, quality of knowledge base is the most important characteristic of Vulnerability Management (VM) product. Maybe it’s because I have spent significant amount of time making different security content for vulnerability scanners and this is some form of professional deformation. 🙂 The fact is that nowadays we have dozens of VM solutions on the market, which have very different knowledge bases and thus different abilities for detecting vulnerabilities. And really nobody talk about this. I can recommend related post “Tenable doesn’t want to be Tenable anymore” and especially HD Moore’s comment to that post. It describes the reason why nobody interested now in quality of detection. Maximum what we, end-users, can hear from the vendor about it’s knowledge base is an amount of vulnerability checks: 40000-80000 and approximate list of supported systems. There is a massive false belief that detection quality of the products is approximately the same and it’s better talk about dashboards, reports, SIEM-like capabilities. To demonstrate that the difference actually exists I made a pretty primitive comparison of Nessus and OpenVAS knowledge bases.

I chose these two products, mainly because information on their NASL plugins is available at Vulners.com. As I also wrote earlier how you can use easily parse Vulners archives in python, so you can repeat it for yourself. I talked about this topic at Pentestit webinar about Vulners. If you are familiar with Russian, you can also check this out. 😉 The slides for this presentation are available here.

Why I call this comparison fast and primitive? I don’t define the structure of KBs for this product and don’t carefully map one nasl script to another. I suppose it may be a theme for another posts. Instead I am looking at the CVE links. If two scanners detect can the same vulnerabilities, they should have the same CVE links in all the NASL scripts, right? In reality we have a great difference between the products and more than a half of the CVEs can’t be detected by using both of them.

CVE links from NASL plugins

All CVEs: 80196
OpenVAS CVE links: 29240
Nessus CVE links: 35032
OpenVAS vs. Nessus: 3787;25453;9579

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Custom Vulnerability Management Reports

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Custom Vulnerability Management Reports. It is strange to even talk about custom reports based on vulnerability scans from Tenable products.

Custom Vulnerability Management Reporting

Just look at the variety of report templates available for SecurityCenter. For every taste and need! Why may you ever need to make any custom reports?

SC Report Templates

The thing is, if you want to use SecurityCenter reports you need to have all the scans of all your hosts in SecurityCenter and, as you know, SecurityCenter is licensed by IPs. What if you have tens of thousands of hosts? Price may be extremely high. In the other hand, you can take Nessus or SecurityCenter scan results via API (read how to do it in “Retrieving scan results through Nessus API” and “Tenable SecurityCenter and its API“) and process it with your own scripts for free.

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Retrieving product expiration dates from Tenable Customer Support Portal

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Retrieving product expiration dates from Tenable Customer Support Portal. I don’t say that it is a rocket science or something, but maybe someone will need to automate Tenable Support portal routine, and here will be a script, which can be used. My own case was to get expiration date for purchased and trial Tenable products. To know in advance when and what products should be bought and updated.

Registered Products

It turned out that getting this data from deployed products via APIs is not as trivial as it sounds, but I will write about this topic next time.

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Nessus Manager and Agents

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Nessus Manager and Agents. In this post I would like to share my experience with Tenable Nessus Manager. And especially how to manage agented scans with it.

Nessus Manager and Agents

First of all, I will, once again, briefly describe main editions of Nessus vulnerability management solution. Three of them, that you can deploy in your infrastructure, and one is cloud based (Nessus Cloud).

It’s of course well known Nessus Home edition, that is free for home users. Nessus Home is strictly limited by amount of IP addresses you can scan. If you try to use it in some commercial environment you might have some problems with Tenable. But for scanning some home servers and desktops, or perhaps study how vulnerability scanners work it is a really great option. You can get home license automatically after filling the registration form. I described how to register Nessus Home, configure and use it in my earlier post.

The other Nessus Professional edition is for cybersecurity professionals/individuals, who may use this product for security assessment. It is most popular version of Nessus. There is no limit in IP addresses, so you can purchase one license for Nessus Professional scanner and theoretically scan everything in your organization. The cost of the scanner is just about $2,000. Very reasonable price comparing with other competitors. It also supports multiple user accounts.

If Nessus professional does such a beautiful job, why should anybody want something else? The answer is managing multiple connected vulnerability scanners and local agents. You can configure another edition, Nessus Manager, to run scan tasks from remote connected Nessus Professional scanners. You can also configure Nessus Manager to run audit and compliance scan tasks with locally installed Nessus agents. And it is the only way to do it. Even if you’ve already purchased some expensive Enterprise Vulnerability Management product from Tenable, such as Tenable Security Center or Tenable Security Center Continuous View you still will need to pay extra ~$3,000 – $5,000 for Nessus Manager if you want to use local agents.

Nessus Cloud is like Nessus Manager but it is hosted on remote Tenable servers.

Why may you need to use local agents for scanning? The most of obvious reasons is that in  this case you won’t need to manage accounts for authenticated scan. You can also check how Qualys made Agented Scanning and compare it with Tenable approach bellow.

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QSC16: from Vulnerability Management to IT Visibility

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QSC16: from Vulnerability Management to IT Visibility. I want to share my impressions of QSC16 conference, where recently I had pleasure to attend. This yearly conference is held in Munich for ten years already. I was there before only one time, in 2012. It made a great impression and this year was no worse.

My photo QSC16

First of all, I should write some words about the conference itself. QSC is an acronym for Qualys Security Conference. It is clear from the name that it is fully dedicated to Qualys products.

Who might be interested in such event?

Mainly, of course, current and potential users of Qualys products, partners, competitors (from own experience, they are not welcomed there ;-)) and, I think it is the smallest group, analysts of Vulnerability Management market and Vulnerability Assessment geeks, like me. For people, who are sincerely interested in VM market changes, road show of the global VM vendor with the biggest market share (is it right, Gartner?) is a precious information source. Here you can learn about real experiences in the use of Qualys products and hear about the company’s future plans.

BTW, if you are one of those, and we do not know each other, we should definitely have a talk. 😉

QSC Agenda

Why is this event important? Despite existing skepticism about mono-vendor conferences and roadshows, QSC is one of the few events in Europe dedicated to the VM, in the broad sense of the term, almost exclusively. All discussions are, of course, in the context of Qualys solutions and you won’t hear any real critics of the vendor, however questions raised there are relevant for the entire VM market.

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Forever “reserved” CVEs

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Forever “reserved” CVEs. In this post I would like to provide some links, that you can use to find out necessary information about vulnerability by its CVE ID. I also want to share my amazement, how the method of using the CVE identifiers is changing.

Reserved CVE

Traditionally, CVE was a global identifier that most of vulnerabilities had. Have you found malicious bug in some software? Send a brief description to MITRE and you will receive CVE id. Some time later NIST will analyze this CVE, will add CVSS vector and CPEs and will put a new item to the NVD database. MITRE and NVD CVE databases were really useful source of information.

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