Category Archives: Projects

Scanvus now supports Vulners and Vulns.io VM Linux vulnerability detection APIs

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Scanvus now supports Vulners and Vulns.io VM Linux vulnerability detection APIs. Hello everyone! Great news for my open source Scanvus project! You can now perform vulnerability checks on Linux hosts and docker images not only using the Vulners.com API, but also with the Vulns.io VM API. It’s especially nice that all the code to support the new API was written and contributed by colleagues from Vulns.io. I just had to do the final test. Many thanks to them for this!

Alternative video link (for Russia): https://vk.com/video-149273431_456239113

How can the support of these two APIs in Scanvus be useful?

  1. Now there is no binding to one vendor. Choose which service and price you prefer.
  2. The set of supported operating systems varies between Vulners.com and Vulns.io. If a particular Linux distribution is not supported by one vendor, it may be supported by another vendor.
  3. Vulners and Vulns.io implemented vulnerability checks independently of each other. If the results differ when scanning the same host/image, then implementation errors will be clearly visible.
  4. Scanvus is released under the MIT license, so you can use it as an example of working with the Vulners.com and Vulns.io APIs and use this code in your projects.

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Microsoft Patch Tuesday December 2022: SPNEGO RCE, Mark of the Web Bypass, Edge Memory Corruptions

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Microsoft Patch Tuesday December 2022: SPNEGO RCE, Mark of the Web Bypass, Edge Memory Corruptions. Hello everyone! This episode will be about Microsoft Patch Tuesday for December 2022, including vulnerabilities that were added between November and December Patch Tuesdays. As usual, I use my open source Vulristics project to analyse and prioritize vulnerabilities.

Alternative video link (for Russia): https://vk.com/video-149273431_456239112

But let’s start with an older vulnerability. This will be another example why vulnerability prioritization is a tricky thing and you should patch everything. In the September Microsoft Patch Tuesday there was a vulnerability Information Disclosure – SPNEGO Extended Negotiation (NEGOEX) Security Mechanism (CVE-2022-37958), which was completely unnoticed by everyone. Not a single VM vendor paid attention to it in their reviews. I didn’t pay attention either.

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Microsoft Patch Tuesday November 2022: Exchange ProxyNotShell RCE, JScript9, MoTW, OpenSSL, Edge, CNG, Print Spooler

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Microsoft Patch Tuesday November 2022: Exchange ProxyNotShell RCE, JScript9, MoTW, OpenSSL, Edge, CNG, Print Spooler. Hello everyone! This episode will be about Microsoft Patch Tuesday for November 2022, including vulnerabilities that were added between October and November Patch Tuesdays. As usual, I use my open source Vulristics project to create the report.

Alternative video link (for Russia): https://vk.com/video-149273431_456239107

The most important news of this Patch Tuesday was a release of patches for ProxyNotShell Remote Code Execution – Microsoft Exchange (CVE-2022-41040, CVE-2022-41082) mentioned in the previous episode. These vulnerabilities became public on September 28, and updates for this vulnerability did not appear until November 8. Microsoft could have acted more quickly. But it’s good that the problem with these actively exploited vulnerabilities is finally solved.

But besides ProxyNotShell, this November Patch Tuesday had a lot of interesting vulnerabilities. Let’s take a look.

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Microsoft Patch Tuesday October 2022: Exchange ProxyNotShell RCE, Windows COM+ EoP, AD EoP, Azure Arc Kubernetes EoP

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Microsoft Patch Tuesday October 2022: Exchange ProxyNotShell RCE, Windows COM+ EoP, AD EoP, Azure Arc Kubernetes EoP. Hello everyone! This episode will be about Microsoft Patch Tuesday for October 2022, including vulnerabilities that were added between September and October Patch Tuesdays. As usual, I use my open source Vulristics project to create the report.

Alternative video link (for Russia): https://vk.com/video-149273431_456239106

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Joint Advisory AA22-279A and Vulristics

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Joint Advisory AA22-279A and Vulristics. Hello everyone! This episode will be about the new hot twenty vulnerabilities from CISA, NSA and FBI, Joint cybersecurity advisory (CSA) AA22-279A, and how I analyzed these vulnerabilities using my open source project Vulristics.

Alternative video link (for Russia): https://vk.com/video-149273431_456239105

Americans can’t just release a list of “20 vulnerabilities most commonly exploited in attacks on American organizations.” They like to add geopolitics and point the finger at some country. Therefore, I leave the attack attribution mentioned in the advisory title without comment.

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Microsoft Patch Tuesday September 2022: CLFS Driver EoP, IP packet causes RCE, Windows DNS Server DoS, Spectre-BHB

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Microsoft Patch Tuesday September 2022: CLFS Driver EoP, IP packet causes RCE, Windows DNS Server DoS, Spectre-BHB. Hello everyone! Let’s take a look at Microsoft’s September Patch Tuesday. This time it is quite compact. There were 63 CVEs released on Patch Tuesday day. If we add the vulnerabilities released between August and September Patch Tuesdays (as usual, they were in Microsoft Edge), the final number is 90. Much less than usual.

Alternative video link (for Russia): https://vk.com/video-149273431_456239101

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Scanvus – my open source Vulnerability Scanner for Linux hosts and Docker images

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Scanvus – my open source Vulnerability Scanner for Linux hosts and Docker images. Hello everyone! This video was recorded for the VMconf 22 Vulnerability Management conference, vmconf.pw. I will be talking about my open source project Scanvus. This project is already a year old and I use it almost every day.

Alternative video link (for Russia): https://vk.com/video-149273431_456239100

Scanvus (Simple Credentialed Authenticated Network VUlnerability Scanner) is a vulnerability scanner for Linux. Currently for Ubuntu, Debian, CentOS, RedHat, Oracle Linux and Alpine distributions. But in general for any Linux distribution supported by the Vulners Linux API. The purpose of this utility is to get a list of packages and Linux distribution version from some source, make a request to an external vulnerabililty detection API (only Vulners Linux API is currently supported), and show the vulnerability report.

Scanvus can show vulnerabilities for

  • localhost
  • remote host via SSH
  • docker image
  • inventory file of a certain format

This utility greatly simplifies Linux infrastructure auditing. And besides, this is a project in which I can try to implement my ideas on vulnerability detection.

Example of output

For all targets the output is the same. It contains information about the target and the type of check. Then information about the OS version and the number of Linux packages. And finally, the actual information about vulnerabilities: how many vulnerabilities were found and the criticality levels of these vulnerabilities. The table shows the criticality level, bulletin ID, CVE list for the bulletin, and a comparison of the invulnerable fixed package version with the actual installed version.

This report is not the only way to present results. You can optionally export the results to JSON (OS inventory data, raw vulnerability data from Vulners Linux API or processed vulnerability data).

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