CVE-2023-36579
Published: 10 October 2023
Summary
CVE-2023-36579 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 8.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Microsoft Message Queuing (MSMQ) contains a denial-of-service vulnerability tracked as CVE-2023-36579. The flaw is present in the MSMQ component of supported Windows systems and carries a CVSS 3.1 base score of 7.5, reflecting a network-accessible weakness that can exhaust service availability without requiring authentication or user interaction.
An unauthenticated attacker can send specially crafted network messages to an MSMQ endpoint, triggering the condition described by CWE-400 and causing the service to become unresponsive. Successful exploitation results in loss of availability for message queuing operations while leaving confidentiality and integrity unaffected.
The Microsoft Security Response Center advisory published at the referenced URL supplies official guidance on affected builds and available updates. The associated EPSS score has remained flat at 0.0683 with no material increase after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-40524
Vulnerability details
Microsoft Message Queuing (MSMQ) 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.