Tag Archives: Exchange

I have finalized the list of trending vulnerabilities for 2024 according to Positive Technologies

I have finalized the list of trending vulnerabilities for 2024 according to Positive Technologies

I have finalized the list of trending vulnerabilities for 2024 according to Positive Technologies. Last year, 74 vulnerabilities were classified as trending (to compare the scale, just over 40,000 were added to NVD in 2024).

All trending vulnerabilities are found in Western commercial products and open source projects. This year, the vulnerabilities of domestic Russian products did not reach the level of criticality required to classify them as trending.

For 55 of all trending vulnerabilities there are currently signs of exploitation in attacks, for 17 there are public exploits (but no signs of exploitation) and for the remaining 2 there is only a possibility of future exploitation.

Vulnerabilities were often added to trending ones before signs of exploitation in the wild appeared. For example, the remote code execution vulnerability in VMware vCenter (CVE-2024-38812) was added to the list of trending vulnerabilities on September 20, 3 days after the vendor’s security bulletin appeared. There were no signs of exploitation in the wild or public exploit for this vulnerability. Signs of exploitation appeared only 2 months later, on November 18.

Most of the vulnerabilities in the trending list are of the following types: Remote Code or Command Execution (24) and Elevation of Privilege (21).

4 vulnerabilities in Barracuda Email Security Gateway (CVE-2023-2868), MOVEit Transfer (CVE-2023-34362), papercut (CVE-2023-27350) and SugarCRM (CVE-2023-22952) were added in early January 2024. These vulnerabilities were massively exploited in the West in 2023, and attacks using these vulnerabilities could also tangentially affect those domestic Russian organizations where these products had not yet been taken out of service. The rest of the vulnerabilities became trending in 2024.

34 trending vulnerabilities affect Microsoft products (45%).

🔹 17 of them are Elevation of Privilege vulnerabilities in the Windows kernel and standard components.

🔹 1 Remote Code Execution vulnerability in Windows Remote Desktop Licensing Service (CVE-2024-38077).

2 trending Elevation of Privilege vulnerabilities affect Linux systems: one in nftables (CVE-2024-1086), and the second in needrestart (CVE-2024-48990).

Other groups of vulnerabilities

🔻 Phishing attacks: 19 (Windows components, Outlook, Exchange, Ghostscript, Roundcube)
🔻 Network security and entry points: 13 (Palo Alto, Fortinet, Juniper, Ivanti, Check Point, Zyxel)
🔻 Virtual infrastructure and backups: 7 (VMware, Veeam, Acronis)
🔻 Software development: 6 (GitLab, TeamCity, Jenkins, PHP, Fluent Bit, Apache Struts)
🔻 Collaboration tools: 3 (Atlassian Confluence, XWiki)
🔻 CMS WordPress plugins: 3 (LiteSpeed Cache, The Events Calendar, Hunk Companion)

🗒 Full Vulristics report

🟥 Article on the official website “Vulnerable software and hardware vs. security researchers” (rus)

На русском

New episode “In The Trend of VM” (#10): 8 trending vulnerabilities of November, zero budget VM and who should look for patches

New episode “In The Trend of VM” (#10): 8 trending vulnerabilities of November, zero budget VM and who should look for patches. The competition for the best question on the topic of VM continues. 😉🎁

📹 Video on YouTube, LinkedIn
🗞 Post on Habr (rus)
🗒 Digest on the PT website

Content:

🔻 00:29 Spoofing – Windows NTLM (CVE-2024-43451)
🔻 01:16 Elevation of Privilege – Windows Task Scheduler (CVE-2024-49039)
🔻 02:16 Spoofing – Microsoft Exchange (CVE-2024-49040)
🔻 03:03 Elevation of Privilege – needrestart (CVE-2024-48990)
🔻 04:11 Remote Code Execution – FortiManager “FortiJump” (CVE-2024-47575)
🔻 05:19 Authentication Bypass – PAN-OS (CVE-2024-0012)
🔻 06:32 Elevation of Privilege – PAN-OS (CVE-2024-9474)
🔻 07:42 Path Traversal – Zyxel firewall (CVE-2024-11667)
🔻 08:37 Is it possible to Manage Vulnerabilities with no budget?
🔻 09:53 Should a VM specialist specify a patch to install on the host in a Vulnerability Remediation task?
🔻 10:51 Full digest of trending vulnerabilities
🔻 11:18 Backstage

На русском

About Spoofing – Microsoft Exchange (CVE-2024-49040) vulnerability

About Spoofing - Microsoft Exchange (CVE-2024-49040) vulnerability

About Spoofing – Microsoft Exchange (CVE-2024-49040) vulnerability. The vulnerability is from the November Microsoft Patch Tuesday. An incorrectly formulated P2 FROM header processing policy allows an attacker to make his email address look legitimate to the victim (for example, like a work colleague’s address). Which, of course, significantly increases the effectiveness of phishing attacks. 😏🪝 The vulnerabilities affect Exchange Server 2019 and Exchange Server 2016.

Microsoft has paused the rollout of the initial patches published on November 12. Their installation led to crashes. New fixes were published by Microsoft only on November 27.

👾 Kaspersky has already observed attempts to exploit this vulnerability. They wrote about this in a blog post on November 26.

На русском

TOP 5 CVEs that were most often exploited by Positive Technologies pentesters in 2023

TOP 5 CVEs that were most often exploited by Positive Technologies pentesters in 2023. The report was released on July 2. I generated a rap track on this topic in Russian using Suno. 🙂 English subtitles available.

List of vulnerabilities:

🔻 Remote Code Execution – Microsoft Exchange “ProxyNotShell” (CVE-2022-41040, CVE-2022-41080, CVE-2022-41082)
🔻 Remote Code Execution – Bitrix Site Manager “PollsVotes” (CVE-2022-27228)
🔻 Elevation of Privilege – Polkit “PwnKit” (CVE-2021-4034)

На русском

My colleagues from PT ESC discovered a previously unknown keylogger for Microsoft Exchange OWA

My colleagues from PT ESC discovered a previously unknown keylogger for Microsoft Exchange OWA

My colleagues from PT ESC discovered a previously unknown keylogger for Microsoft Exchange OWA. The injected code collects the logins/passwords that users enter to access the Exchange web interface and stores them in a special file. This file is accessible externally. Thus, attackers simply collect credentials to access confidential information and develop the attack further. 🙂

👾 The malware is installed by exploiting an old ProxyShell vulnerability (CVE-2021-34473, CVE-2021-34523, CVE-2021-31207).

🏛 A total of 30 victims were discovered, including government agencies, banks, IT companies, and educational institutions.

🌍 Countries attacked: Russia, UAE, Kuwait, Oman, Niger, Nigeria, Ethiopia, Mauritius, Jordan, Lebanon and others.

🕵️‍♂️ The fact of compromise can be determined by a specific line in the logon.aspx file.

На русском

First impressions of the March Microsoft Patch Tuesday

First impressions of the March Microsoft Patch Tuesday
First impressions of the March Microsoft Patch TuesdayFirst impressions of the March Microsoft Patch TuesdayFirst impressions of the March Microsoft Patch TuesdayFirst impressions of the March Microsoft Patch TuesdayFirst impressions of the March Microsoft Patch TuesdayFirst impressions of the March Microsoft Patch TuesdayFirst impressions of the March Microsoft Patch Tuesday

First impressions of the March Microsoft Patch Tuesday. So far I have not seen anything overtly critical. There are 80 vulnerabilities in total, including 20 added between the February and March MSPT.

With PoC there is only one:

🔻 Information Disclosure – runc (CVE-2024-21626). It allows an attacker to escape from the container. What does Microsoft have to do with it? The vulnerability has been fixed in Azure Kubernetes Service and CBL-Mariner (Microsoft’s internal Linux distribution).

For the rest, there are no signs of active exploitation or the existence of a PoC yet.

We can pay attention to the following:

🔸 Elevation of Privilege – Windows Kernel (CVE-2024-21443, CVE-2024-26173, CVE-2024-26176, CVE-2024-26178, CVE-2024-26182). Such vulnerabilities often become exploitable recently. The same applies to Elevation of Privilege – Windows Print Spooler (CVE-2024-21433).
🔸 Remote Code Execution – Open Management Infrastructure (OMI) (CVE-2024-21334). CVSS 9.8 and ZDI write that “it would allow a remote, unauthenticated attacker to execute code on OMI instances on the Internet”. Perhaps such instances are indeed often accessible via the Internet, this requires research. 🤷‍♂️
🔸 Remote Code Execution – Windows Hyper-V (CVE-2024-21407). This “guest-to-host escape” vulnerability was highlighted by everyone: Qualys, Tenable, Rapid7, ZDI.
🔸 Remote Code Execution – Microsoft Exchange (CVE-2024-26198). This is a “DLL loading” vulnerability. The details are still unclear, but I wouldn’t be surprised if there will be a detailed write-up on it soon.

🗒 Vulristics report

На русском

October 2023: back to Positive Technologies, Vulristics updates, Linux Patch Wednesday, Microsoft Patch Tuesday, PhysTech VM lecture

October 2023: back to Positive Technologies, Vulristics updates, Linux Patch Wednesday, Microsoft Patch Tuesday, PhysTech VM lecture. Hello everyone! October was an interesting and busy month for me. I started a new job, worked on my open source Vulristics project, and analyzed vulnerabilities using it. Especially Linux vulnerabilities as part of my new Linux Patch Wednesday project. And, of course, analyzed Microsoft Patch Tuesday as well. In addition, at the end of October I was a guest lecturer at MIPT/PhysTech university. But first thing first.

Alternative video link (for Russia): https://vk.com/video-149273431_456239138

Continue reading