CVE-2024-43567
Published: 08 October 2024
Summary
CVE-2024-43567 is a high-severity Allocation of Resources Without Limits or Throttling (CWE-770) vulnerability in Microsoft Windows Server 2012. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 8.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Windows Hyper-V is affected by a denial of service vulnerability identified as CVE-2024-43567. The issue carries a CVSS 3.1 score of 7.5 and is associated with CWE-770, indicating improper resource allocation that can be triggered remotely.
An unauthenticated attacker with network access can exploit the flaw without user interaction or credentials to disrupt Hyper-V availability, resulting in a high-impact denial of service while leaving confidentiality and integrity unaffected.
Microsoft published an advisory for the vulnerability at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43567 that includes mitigation guidance and patch information.
The associated EPSS score remains flat at 0.0657 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-40323
Vulnerability details
Windows Hyper-V Denial of Service Vulnerability
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
This control implements explicit throttling on session allocation, addressing the weakness of allocating resources without limits.
Plan testing exercises resource allocation limits and throttling during simulated failures, directly addressing weaknesses that allow unbounded resource use.
Contingency plan updates ensure recovery strategies address unbounded resource allocation, making it harder for attackers to exploit lack of throttling to cause prolonged outages.
Provides continuity when unbounded resource allocation at the primary site leads to exhaustion and downtime.
Alternate services allow operations to continue when primary allocation of resources lacks limits or throttling.
Explicit planning of security-related actions requires defining limits, windows, and resource allocations, making allocation without throttling far less likely.
Measures of performance include tracking allocation behavior and throttling effectiveness, reducing the window for resource exhaustion attacks.
Imposes an inactivity-based limit on network resource allocation, throttling the number of concurrently held connections.