CVE-2022-36983
Published: 29 March 2023
Summary
CVE-2022-36983 is a critical-severity Missing Authentication for Critical Function (CWE-306) vulnerability in Ivanti Avalanche. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 2.8% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
This vulnerability is an authentication bypass issue affecting Ivanti Avalanche installations. It stems from missing authentication checks in the SetSettings class, allowing unauthenticated access to functionality that should be restricted. The flaw is tracked as ZDI-CAN-15919 and carries a CVSS 3.1 score of 9.8 with CWE-306.
Remote attackers can exploit the issue over the network without authentication or user interaction to bypass access controls on the target system, potentially leading to full compromise of confidentiality, integrity, and availability.
The referenced Zero Day Initiative advisory ZDI-22-788 and Ivanti Avalanche 6.3.4 release notes address the issue, indicating that the flaw was resolved in the 6.3.4 update. The EPSS score has remained flat at its peak value of 0.3629 with no material increase observed after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-39640
Vulnerability details
This vulnerability allows remote attackers to bypass authentication on affected installations of Ivanti Avalanche. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SetSettings class. The issue results from the lack of authentication prior to…
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allowing access to functionality. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-15919.
- 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.
Requires established identification and authentication to unlock, mitigating missing authentication for continued system access.
Requiring identification and rationale for actions allowed without authentication ensures critical functions are not left unprotected by forcing review of authentication requirements.
Authorizing mobile device connections to organizational systems ensures authentication is performed for this critical access function.
Guarantees critical functions are protected by mandatory invocation of the access control mechanism.
Auditing sessions makes it possible to detect access to critical functions without required authentication.
The assessment process confirms authentication is present and effective for critical functions, preventing exploitation from missing authentication.
Certification assesses that critical functions have required authentication controls in place.
Disabling non-essential functions and services eliminates the need to secure them, reducing exposure from missing authentication on unnecessary components.