Microsoft Windows MSHTML Platform Spoofing
CVE-2024-38112 is a high-severity user interface (UI) misrepresentation of critical information vulnerability in Windows 10 Version 22H2 from Microsoft, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 10.0.19045.4651 as the first without the flaw, so updating Windows 10 Version 22H2 to that release or later removes the exposure. CISA added it to the Known Exploited Vulnerabilities catalogue on July 9, 2024, which means attacks have been observed in the wild.
Attackers are already exploiting this vulnerability, according to CISA.
What to do
- Update Windows 10 Version 22H2 to 10.0.19045.4651 or a later version.
- Update Windows 11 Version 23H2 to 10.0.22631.3880 or a later version.
- Update Windows 10 Version 1507 to 10.0.10240.20710 or a later version.
- CISA's required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Read the advisory on msrc.microsoft.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 up to, but not including, 10.0.19045.4651 | 10.0.19045.4651 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 up to, but not including, 10.0.22631.3880 | 10.0.22631.3880 |
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 up to, but not including, 10.0.10240.20710 | 10.0.10240.20710 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 up to, but not including, 10.0.22621.3880 | 10.0.22621.3880 |
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 up to, but not including, 10.0.14393.7159 | 10.0.14393.7159 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 up to, but not including, 10.0.14393.7159 | 10.0.14393.7159 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19043.0 up to, but not including, 10.0.19044.4651 | 10.0.19044.4651 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 up to, but not including, 10.0.14393.7159 | 10.0.14393.7159 |
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.6003.0 up to, but not including, 6.0.6003.22769 | 6.0.6003.22769 |
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.6003.0 up to, but not including, 6.0.6003.22769 | 6.0.6003.22769 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 up to, but not including, 10.0.17763.6054 | 10.0.17763.6054 |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 up to, but not including, 6.3.9600.22074 | 6.3.9600.22074 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 up to, but not including, 10.0.22631.3880 | 10.0.22631.3880 |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 up to, but not including, 6.3.9600.22074 | 6.3.9600.22074 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 up to, but not including, 10.0.20348.2582 | 10.0.20348.2582 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 up to, but not including, 10.0.25398.1009 | 10.0.25398.1009 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 up to, but not including, 10.0.17763.6054 | 10.0.17763.6054 |
| Microsoft | Windows 11 version 21H2 | 10.0.0 up to, but not including, 10.0.22000.3079 | 10.0.22000.3079 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 up to, but not including, 10.0.17763.6054 | 10.0.17763.6054 |
| Microsoft | Windows 10 1507 | before 10.0.10240.20710 | 10.0.10240.20710 |
| Microsoft | Windows 10 1607 | before 10.0.14393.7159 | 10.0.14393.7159 |
| Microsoft | Windows 10 1809 | before 10.0.17763.6054 | 10.0.17763.6054 |
| Microsoft | Windows 10 21h2 | before 10.0.19044.4651 | 10.0.19044.4651 |
| Microsoft | Windows 10 22h2 | before 10.0.19045.4651 | 10.0.19045.4651 |
| Microsoft | Windows 11 21h2 | before 10.0.22000.3079 | 10.0.22000.3079 |
Version data comes from the organisation that assigned the CVE; 5 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by CNA (microsoft.com).
Official description
Windows MSHTML Platform Spoofing Vulnerability
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: User Interface (UI) Misrepresentation of Critical Information
The user interface (UI) does not properly represent critical information to the user, allowing the information - or its source - to be obscured or spoofed. This is often a component in phishing attacks.
How developers prevent this class of flaw
- Perform data validation (e.g. syntax, length, etc.) before interpreting the data.
- Create a strategy for presenting information, and plan for how to display unusual characters.
More User Interface (UI) Misrepresentation of Critical Information vulnerabilities (CWE-451)
Timeline
- CVE record published.
- Added to CISA's Known Exploited Vulnerabilities catalogue.
- CISA published its SSVC assessment (exploitation: active, automatable: no, technical impact: total).
- Deadline for US federal agencies to remediate, set by CISA.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-38112US Government Resource
Recent User Interface (UI) Misrepresentation of Critical Information vulnerabilities
- 7.8 High severity
- 8.8 High severity
- 7.5 High severity
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