Overview
In this report, we focus on a critical vulnerability identified as CVE-2025-33122, affecting IBM i versions 7.2 to 7.6. The vulnerability lies in the IBM Advanced Job Scheduler for i, where an unqualified library call could potentially allow a user to elevate their privileges. This vulnerability is significant because an exploitation could lead to system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-33122
Severity: High (CVSS: 7.5)
Attack Vector: Local
Privileges Required: Low
User Interaction: Required
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
IBM i | 7.2, 7.3, 7.4, 7.5, 7.6
How the Exploit Works
The vulnerability stems from an unqualified library call in the IBM Advanced Job Scheduler for i. An attacker with low-level privileges could manipulate library calls, resulting in user-controlled code running with administrator privileges. This elevation of privileges could potentially lead to full system compromise or data leakage.
Conceptual Example Code
// Pseudocode representing the potential exploit
libraryCall("malicious_code"); // Unqualified call to user-controlled library
executeAsAdmin(); // Code executes with elevated privilegesWhile the above code is a simplified representation, in a real-world scenario, the malicious actor would need to craft malicious code that exploits the unqualified library call and then trigger the vulnerable function within the IBM Advanced Job Scheduler.
To prevent the vulnerability from being exploited, it is advised to apply the vendor patch as soon as it is available. In the interim, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure.
