Microsoft Patch Tuesday for October 2022 doesn't fix Exchange Server flaws
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2022-37968 | Microsoft has identified a vulnerability affecting the cluster connect feature of Azure Arc-enabled Kubernetes clusters. Microsoft has identified a vulnerability affecting the cluster connect feature of Azure Arc-enabled Kubernetes clusters. This vulnerability could allow an unauthenticated user to elevate their privileges and potentially gain administrative control over the Kubernetes cluster. Additionally, because Azure Stack Edge allows customers to deploy Kubernetes workloads on their devices via Azure Arc, Azure Stack Edge devices are also vulnerable to this vulnerability. NVD description · AI analysis pending | 10.0 | 3% |
| — | ||
| CVE-2022-37989 +1 in the same advisory: …37987 | Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability NVD description · AI analysis pending | 7.8 | 9% |
| — | ||
| CVE-2022-38048 | Microsoft Office Remote Code Execution Vulnerability Microsoft Office Remote Code Execution Vulnerability NVD description · AI analysis pending | 7.8 | 2% |
| — | ||
| CVE-2022-41033 | Local Privilege Escalation in Microsoft Windows COM+ Event System Service CVE-2022-41033 is an elevation-of-privilege flaw in the Microsoft Windows COM+ Event System Service, classified under CWE-843 (access of a resource using an incompatible type). It is triggered locally: an attacker who can already execute code on a machine with limited (low-privilege) rights can exploit the vulnerable service with no user interaction, per the CVSS vector (AV:L/AC:L/PR:L/UI:N). Successful exploitation elevates the attacker to the highest local privilege level, with high impact on the confidentiality, integrity, and availability of the system — a typical post-compromise privilege-escalation step for an attacker who already has a foothold. The flaw affects the Windows releases in the CISA CPE data — Windows 7, 8.1, RT 8.1, Windows 10 (1507, 1607, 1809, 20H2, 21H1, 21H2), Windows 11 (21H2, 22H2), and Windows Server 2008 — meaning effectively the broad Windows installed base. Microsoft patched it in the October 2022 Patch Tuesday release and it was added to CISA's Known Exploited Vulnerabilities catalog on 2022-10-11 as exploited in the wild; no public PoC is known, ransomware use is unknown, and EPSS currently estimates a 1.7% probability of exploitation in the next 30 days (75th percentile). Do: Apply the October 2022 Windows security updates (or any later cumulative update) on all affected Windows clients and servers, prioritizing hosts where low-privileged users can run code, such as workstations, terminal/RDS servers, and VDI images — this also satisfies the CISA KEV required action. Until patched, treat any unprivileged compromise of a Windows host as potentially escalated to full local privilege, and restrict untrusted local code execution where possible. Verify remediation by confirming the October 2022 (or newer) cumulative update level on each host rather than relying on OS version alone. | 7.8 | 2% | KEV |
| masson the order of 1 billion Windows devices (essentially the entire supported Windows client and server installed base) |
Full article406 words · extracted from securityaffairs.com · click to collapse
Microsoft Patch Tuesday security updates for October 2022 addressed a total of 85 security vulnerabilities, including an actively exploited zero-day.
Microsoft Patch Tuesday security updates for October 2022 addressed 85 new vulnerabilities in multiple products, including Microsoft Windows and Windows Components; Azure, Azure Arc, and Azure DevOps; Microsoft Edge (Chromium-based); Office and Office Components; Visual Studio Code; Active Directory Domain Services and Active Directory Certificate Services; Nu Get Client; Hyper-V; and the Windows Resilient File System (ReFS).
15 out of 85 bugs are rated Critical, 69 are rated Important, and one is rated Moderate in severity.
It is interesting to note that the security patches don’t address the Exchange Server issues, despite two MS Exchange flaws being actively exploited in the wild.
These bugs were purchased by the ZDI at the beginning of September and reported to Microsoft at the time.
“With no updates available to fully address these bugs, the best administrators can do is ensure the September 2021 Cumulative Update (CU) is installed. This adds the Exchange Emergency Mitigation service. This automatically installs available mitigations and sends diagnostic data to Microsoft. Otherwise, follow this post from Microsoft with the latest information.” reported ZDI. “Their mitigation advice has changed multiple times, so you’ll need to make sure you check it often for updates.”
Microsoft also addressed 11 issues in Microsoft Edge (Chromium-based) and one flaw for side-channel speculation in Arm processors. Six of these CVEs were submitted through the ZDI program.
One of the most interesting issues addressed by Microsoft this month is a privilege escalation issue, tracked as CVE-2022-41033, in Windows COM+ Event System Service.
This flaw is being actively exploited in attacks in the wild, likely chained with other issues to achieve code execution over a system.
“An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.” reads the advisory published by Microsoft.
Microsoft Patch Tuesday also addressed a critical Office Remote Code Execution vulnerability tracked as CVE-2022-38048.
The IT giant also addressed a Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability, tracked as CVE-2022-37987/CVE-2022-37989, and an Azure Arc-enabled Kubernetes cluster Connect Elevation of Privilege Vulnerability, tracked as CVE-2022-37968 (CVSS score: 10.0).
The full list of CVEs released by Microsoft for October 2022 is available here.
Follow me on Twitter: @securityaffairs and Facebook
| [adrotate banner=”9″] | [adrotate banner=”12″] |
(SecurityAffairs – hacking, Microsoft Patch Tuesday for October 2022)
[adrotate banner=”5″]
[adrotate banner=”13″]
Text extracted automatically; images, tables and formatting may be missing. Original: https://securityaffairs.com/136987/security/microsoft-patch-tuesday-oct-2022.html