WindowsInstaller

September episode of “In The Trend of VM”: 7 CVEs, fake reCAPTCHA, lebanese pagers, VM and IT annual bonuses. Starting this month, we decided to slightly expand the topics of the videos and increase their duration. I cover not only the trending vulnerabilities of September, but also social engineering cases, real-world vulnerability exploitation, and practices of vulnerability management process. At the end we announce a contest of questions about Vulnerability Management with gifts. 🎁

📹 Video “In The Trend of VM” on YouTube
🗞 A post on Habr (rus) a slightly expanded script of the video
🗒 A compact digest on the official PT website

Content:

🔻 00:51 Elevation of Privilege – Windows Installer (CVE-2024-38014) and details about this vulnerability
🔻 02:42 Security Feature Bypass – Windows Mark of the Web “LNK Stomping” (CVE-2024-38217)
🔻 03:50 Spoofing – Windows MSHTML Platform (CVE-2024-43461)
🔻 05:07 Remote Code Execution – VMware vCenter (CVE-2024-38812)
🔻 06:20 Remote Code Execution – Veeam Backup & Replication (CVE-2024-40711), while the video was being edited, data about exploitation in the wild appeared
🔻 08:33 Cross Site Scripting – Roundcube Webmail (CVE-2024-37383)
🔻 09:31 SQL Injection – The Events Calendar plugin for WordPress (CVE-2024-8275)
🔻 10:30 Human vulnerabilities: fake reCAPTCHA
🔻 11:45 Real world vulnerabilities: еxplosions of pagers and other electronic devices in Lebanon and the consequences for the whole world
🔻 14:42 Vulnerability management process practices: tie annual bonuses of IT specialists to meeting SLAs for eliminating vulnerabilities
🔻 16:03 Final and announcement of the contest
🔻 16:24 Backstage

На русском

A few details about Elevation of Privilege – Windows Installer (CVE-2024-38014). So that you don’t get the impression that this vulnerability can be exploited absolutely universally.

🔹 The attacker needs access to the Windows GUI. Naturally, the console window needs to be seen and “caught”. Just with the mouse. The task can be simplified by the SetOpLock utility, which does not allow the window to close.

🔹 The attacker needs a web browser installed on the host. Moreover, the current Edge or IE will not work, Firefox or Chrome is needed. And the browser should not be running before the attack. And Edge or IE should not be set as the default browser.

🔹 This will not work for every MSI file. SEC Consult has released a utility called msiscan to detect MSI files that can be used to exploit this and similar vulnerabilities.

На русском

About Elevation of Privilege – Windows Installer (CVE-2024-38014) vulnerability. The vulnerability was fixed on September 11 as part of the September Microsoft Patch Tuesday. It was discovered by Michael Baer from SEC Consult. On September 12, a post was published in their blog with exploitation details.

MSI files are the standard way to install, repair, and uninstall programs in Windows. Installation requires high privileges. But the repair function can be launched by a low-privileged user. At the same time, the function itself might be executed in the context of NT AUTHORITY\SYSTEM. 🤔

The attacker launches the MSI file of an installed application, selects repair mode, and interacts with the console window launched with SYSTEM privileges. After a few steps, attacker gets an interactive SYSTEM console.

The Microsoft fix activates a UAC prompt when the MSI installer performs an action with elevated privileges, i.e. before the console window appears.

На русском

Microsoft Patch Tuesday December 2021. Hello everyone! It’s even strange to talk about other vulnerabilities, while everyone is so focused on vulnerabilities in log4j. But life doesn’t stop. Other vulnerabilities appear every day. And of course, there are many critical ones among them that require immediate patching. This episode will be about Microsoft Patch Tuesday for December 2021.

I will traditionally use my open source Vulristics tool for analysis.

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Alexander V. Leonov

Vulnerability Management and more

Tag Archives: WindowsInstaller

A few details about Elevation of Privilege – Windows Installer (CVE-2024-38014)

About Elevation of Privilege – Windows Installer (CVE-2024-38014) vulnerability

Microsoft Patch Tuesday December 2021