CVE-2023-23192
Published: 23 March 2023
Summary
CVE-2023-23192 is a high-severity Incorrect Authorization (CWE-863) vulnerability in Isdecisions Userlock. Its CVSS base score is 7.2 (High).
Operationally, ranked in the top 6.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
IS Decisions UserLock MFA version 11.01 contains an authentication bypass vulnerability that stems from improper authorization checks when scheduled tasks are involved. The flaw is tracked as CVE-2023-23192 and carries a CVSS 3.1 base score of 7.2, reflecting network attack vector, low complexity, and high-privilege requirements that nevertheless result in full compromise of confidentiality, integrity, and availability.
An authenticated administrator or other high-privileged user can abuse the scheduled-task mechanism to circumvent multi-factor authentication controls, thereby gaining unauthorized access to protected resources without completing the expected second-factor verification. The underlying weakness is classified under CWE-863 (incorrect authorization).
The associated EPSS score has remained flat at 0.1197 since disclosure, indicating no material increase in observed exploitation interest. Public references consist of a proof-of-concept repository and the vendor product page, but no official patch or mitigation guidance is provided in the available sources.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-27292
Vulnerability details
IS Decisions UserLock MFA 11.01 is vulnerable to authentication bypass using scheduled task.
- 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.
Periodic review and update of procedures reduces incorrect authorization implementations over time.
Supervision identifies cases where authorization logic incorrectly permits unauthorized actions.
Defining permitted attribute values and auditing modifications reduces the chance of incorrect authorization outcomes due to tampered or missing labels.
The authorization process and usage restrictions help prevent incorrect authorization for remote access types.
Establishing configuration and connection requirements helps ensure correct rather than incorrect authorization for wireless access.
Establishing connection authorization processes for mobile devices helps ensure authorization decisions are correctly implemented rather than incorrect.
Monitoring account use, notifying on changes, and reviewing accounts for compliance corrects incorrect authorization assignments.
Ensures authorization decisions for external system use are correctly implemented and enforced.