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.
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.
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).
Microsoft Patch Tuesday August 2022: DogWalk, Exchange EOPs, 13 potentially dangerous, 2 funny, 3 mysterious vulnerabilities. Hello everyone! In this episode, let’s take a look at the Microsoft Patch Tuesday August 2022 vulnerabilities. I use my Vulristics vulnerability prioritization tool as usual. I take comments for vulnerabilities from Tenable, Qualys, Rapid7, ZDI and Kaspersky blog posts. Also, as usual, I take into account the vulnerabilities added between the July and August Patch Tuesdays.
There were 147 vulnerabilities. Urgent: 1, Critical: 0, High: 36, Medium: 108, Low: 2.
There was a lot of great stuff this Patch Tuesday. There was a critical exploited in the wild MSDT DogWalk vulnerability, 3 critical Exchange vulnerabilities that could be easily missed in prioritization, 13 potentially dangerous vulnerabilities, 2 funny vulnerabilities and 3 mysterious ones. Let’s take a closer look.
Vulnerability Management news and publications #2. Hello everyone! This is the second episode of Vulnerability Management news and publications. In fact, this is a collection of my posts from the avleonovcom and avleonovrus telegram channels. Therefore, if you want to read them earlier, subscribe to these channels.
The main idea of this episode. Microsoft is a biased company. In fact, they should now be perceived as another US agency. Does this mean that we need to forget about Microsoft and stop tracking what they do? No, it doesn’t. They do a lot of interesting things that can at least be researched and copied. Does this mean that we need to stop using Microsoft products? In some locations (you know which ones) for sure, in some we can continue to use such products if it is reasonable, but it’s necessary to have a plan B. And this does not only apply to Microsoft. So, it’s time for a flexible approaches. Here we do it this way, there we do it differently. It seems that rather severe fragmentation of the IT market is a long-term trend and it’s necessary to adapt to it.
Microsoft Patch Tuesday July 2022: propaganda report, CSRSS EoP, RPC RCE, Edge, Azure Site Recovery. Hello everyone! Microsoft has been acting weird lately. I mean the recent publication of a propaganda report about evil Russians and how Microsoft is involved in the conflict between countries. It wouldn’t be unusual for a US government agency, NSA or CIA to publish such a report. But when a global IT vendor, which, in theory, should be more or less neutral, does this… This is a clear signal. It’s not about business anymore.
I’ll take a closer look at this report in the next episode of the Vulnerability Management news, but for now let’s take a look at Microsoft July Patch Tuesday. Yes, the vendor is behaving strangely, but Microsoft products need to be patched. Right? At least for now. And tracking vulnerabilities is always a good thing. 🙂
Vulnerability Management news and publications #1. Hello everyone! In this episode, I will try to revive Security News with a focus on Vulnerability Management.
On the one hand, creating such reviews requires free time, which could be spent more wisely, for example, on open source projects or original research. On the other hand, there are arguments in favor of news reviews. Keeping track of the news is part of our job as vulnerability and security specialists. And preferably not only headlines.
I usually follow the news using my automated telegram channel @avleonovnews. And it looks like this: I see something interesting in the channel, I copy it to Saved Messages so that I can read it later. Do I read it later? Well, usually not. Therefore, the creation of news reviews motivates to read and clear Saved Messages. Just like doing Microsoft Patch Tuesday reviews motivates me to watch what’s going on there. In general, it seems it makes sense to make a new attempt. Share in the comments what you think about it. Well, if you want to participate in the selection of news, I will be glad too.
I took 10 news items from Saved Messages and divided them into 5 categories:
Microsoft Patch Tuesday June 2022: Follina RCE, NFSV4.1 RCE, LDAP RCEs and bad patches. Hello everyone! This will be an episode about the Microsoft vulnerabilities that were released on June Patch Tuesday and also between May and June Patch Tuesdays.
On June Patch Tuesday, June 14, 56 vulnerabilities were released. Between May and June Patch Tuesdays, 38 vulnerabilities were released. This gives us 94 vulnerabilities in the report.
This is my personal blog. The opinions expressed here are my own and not of my employer. All product names, logos, and brands are property of their respective owners. All company, product and service names used here for identification purposes only. Use of these names, logos, and brands does not imply endorsement. You can freely use materials of this site, but it would be nice if you place a link on https://avleonov.com and send message about it at me@avleonov.com or contact me any other way.
