CVE-2024-38067
Published: 09 July 2024
Summary
CVE-2024-38067 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Microsoft Windows Server 2008. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 9.4% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Windows Online Certificate Status Protocol (OCSP) Server in affected Windows versions is subject to a denial-of-service vulnerability tracked as CVE-2024-38067. The flaw is classified under CWE-400 and carries a CVSS 3.1 base score of 7.5, reflecting a network-accessible attack that requires no authentication or user interaction and produces a high impact on availability while leaving confidentiality and integrity untouched.
An unauthenticated remote attacker can send specially crafted requests to an exposed OCSP responder, triggering the condition that exhausts resources and renders the service unavailable. Because the attack vector is rated network and prerequisites are minimal, any system hosting the Windows OCSP Server component can be targeted directly from the internet or an adjacent network segment, resulting in loss of certificate-status checking capability for dependent services.
Microsoft has published remediation guidance in its Security Response Center update guide for CVE-2024-38067. Administrators should apply the patches referenced in that advisory to eliminate the resource-exhaustion flaw.
EPSS for the vulnerability rose from a low baseline to a recorded peak of 0.0995 before settling at the current value of 0.0568, indicating that exploitation interest increased measurably after public disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-37762
Vulnerability details
Windows Online Certificate Status Protocol (OCSP) Server 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.
Limiting concurrent sessions directly prevents uncontrolled resource consumption by capping the number of active sessions per user or account.
Analysis identifies uncontrolled resource consumption indicative of denial-of-service or abuse attempts.
Contingency plan testing includes resource exhaustion scenarios to verify recovery, making it harder for attackers to sustain exploits that cause uncontrolled consumption.
Updated contingency plans include current procedures to detect, contain, and recover from resource exhaustion, limiting an attacker's ability to sustain impact from uncontrolled consumption.
Alternate site allows resumption of operations if resource exhaustion at the primary site is exploited to cause unavailability.
Alternate telecommunications services enable resumption of essential functions when primary services become unavailable due to uncontrolled resource consumption.
The team can analyze and respond to resource exhaustion incidents, reducing the impact of attacks that exploit uncontrolled consumption weaknesses.
Timely maintenance support and spare parts enable rapid recovery from failures induced by uncontrolled resource consumption, shortening the impact window of denial-of-service attacks.