CVE-2023-28342
Published: 05 April 2023
Summary
CVE-2023-28342 is a high-severity Uncontrolled Resource Consumption (CWE-400) vulnerability in Zohocorp Manageengine Adselfservice Plus. Its CVSS base score is 7.5 (High).
Operationally, ranked in the top 1.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Zoho ManageEngine ADSelfService Plus versions prior to 6218 contain a vulnerability in the Mobile App Authentication API that permits unauthenticated remote attackers to trigger a denial-of-service condition. The flaw is reflected in a CVSS 3.1 base score of 7.5 with network attack vector, low complexity, and no required privileges or user interaction, resulting in high impact to availability while leaving confidentiality and integrity unaffected.
An attacker with network access can send crafted requests to the exposed Mobile App Authentication API endpoint, exhausting resources and rendering the service unavailable to legitimate users. Because the API does not enforce authentication, exploitation requires no valid credentials or prior interaction with the target system.
Vendor advisory information published at manageengine.com directs administrators to upgrade ADSelfService Plus to release 6218 or later to address the issue. The EPSS score for this CVE rose from lower values to a peak of 0.8545 on 2025-12-11 before receding to the current 0.5856, indicating a period of increased exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-32040
Vulnerability details
Zoho ManageEngine ADSelfService Plus before 6218 allows anyone to conduct a Denial-of-Service attack via the Mobile App Authentication API.
- 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.