Full Report
Microsoft on Tuesday released patches for 138 security vulnerabilities spanning its product portfolio, although none of them have been listed as publicly known or under active attack. Of the 138 flaws, 30 are rated Critical, 104 are rated Important, three are rated Moderate, and one is rated Low in severity. As many as 61 vulnerabilities are classified as privilege escalation bugs, followed by
Analysis Summary
This report summarizes the critical findings from the Microsoft Patch Tuesday release described in the provided context. Given the broad nature of the 138 vulnerabilities mentioned, this summary focuses on the **Critical Remote Code Execution (RCE)** and **Elevation of Privilege (EoP)** trends highlighted in the release.
# Vulnerability: Microsoft July Patch Tuesday (Consolidated Summary)
## CVE Details
*Note: Due to the volume (138 flaws), the following are the primary critical identifiers highlighted.*
- **CVE ID:** CVE-2022-22029, CVE-2022-22039 (Example RCEs), and 136 others.
- **CVSS Score:** Range from 9.8 (Critical) to 3.1 (Low).
- **CWE:** CWE-269 (Improper Privilege Management), CWE-94 (Improper Control of Generation of Code).
## Affected Systems
- **Products:** Microsoft Windows, Azure Site Recovery, Microsoft Edge (Chromium-based), Microsoft Office, Windows DNS Server, Windows Print Spooler, and Windows Kernel.
- **Versions:** Windows 10, Windows 11, Windows Server 2008-2022.
- **Configurations:** Systems running Remote Procedure Call (RPC) services, NFS roles, or Print Spooler services are at highest risk.
## Vulnerability Description
The release addresses a massive wave of **61 Elevation of Privilege (EoP)** vulnerabilities, which allow an attacker with limited access to gain SYSTEM-level privileges. Additionally, **30 Critical** flaws primarily involve **Remote Code Execution (RCE)**. Specifically, vulnerabilities in the Windows Network File System (NFS) and Remote Procedure Call (RPC) runtime allow unauthenticated attackers to execute arbitrary code over the network without user interaction.
## Exploitation
- **Status:** Not exploited in the wild at the time of release; No public PoC currently available for the most critical flaws.
- **Complexity:** Low to Medium.
- **Attack Vector:** Primarily **Network** (for RCEs) and **Local** (for the 61 EoP vulnerabilities).
## Impact
- **Confidentiality:** High (Total disclosure of all information).
- **Integrity:** High (Total compromise of system integrity).
- **Availability:** High (Total shutdown of affected resources).
## Remediation
### Patches
- Cumulative updates for Windows 10 (KB5015807) and Windows 11 (KB5015814).
- Windows Server cumulative updates (2012 R2 through 2022).
- Security updates for Microsoft Office 2013, 2016, 2019, and LTSC 2021.
### Workarounds
- **RPC/NFS:** Restrict access to affected ports (e.g., port 111 and 2049) at the network perimeter.
- **Print Spooler:** Disable the Print Spooler service on servers where printing is not required.
## Detection
- **Indicators of compromise:** Unusual spikes in RPC traffic; unauthorized creation of new administrative accounts; unexpected service crashes in `svchost.exe`.
- **Detection methods and tools:**
- Use Vulnerability Scanners (Nessus/Qualys) to identify missing KB numbers.
- Monitor Event Logs for ID 4624 (account logon) followed by ID 4672 (special privileges assigned).
## References
- **Vendor advisories:** hxxps[://]msrc[.]microsoft[.]com/update-guide
- **Security Analysis:** hxxps[://]krebsonsecurity[.]com/2022/07/microsoft-patch-tuesday-july-2022-edition/
- **Official Portal:** hxxps[://]support[.]microsoft[.]com/en-us/topic/security-update-guide-support-information-d70311f4-3d0d-e25f-2a3b-1b0728362622