Overview
CVE-2025-33103 is a serious vulnerability that affects IBM’s i series from 7.2 to 7.6. The vulnerability resides within the IBM TCP/IP Connectivity Utilities for i, which can be exploited by a malicious actor to escalate privileges and gain root access to the host operating system. This is a significant security risk as it can lead to a potential system compromise or data leakage, rendering sensitive information vulnerable to unauthorized access.
The severity of this vulnerability is underlined by its CVSS severity score of 8.5, marking it as a high-risk issue. Any system running the affected versions of IBM i is at risk and immediate action is recommended to mitigate the threat.
Vulnerability Summary
CVE ID: CVE-2025-33103
Severity: High (8.5 CVSS)
Attack Vector: Command Line Interface
Privileges Required: Low
User Interaction: Required
Impact: System compromise, 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
This vulnerability is exploited through the command line interface of the host operating system. A malicious actor with command line access can elevate privileges to root level by exploiting a flaw in the IBM TCP/IP Connectivity Utilities for i. This access can then be used to execute unauthorized commands or access sensitive data.
Conceptual Example Code
Given that this vulnerability is exploited via the command line, a conceptual example of the exploit may look something like this:
$ connect -u user -p password target.example.com
$ exploit -privilege_escalation "IBM TCP/IP Connectivity Utilities for i" -elevate_to rootPlease note that the above is a conceptual example and not a real exploit code. The actual exploit would likely involve more complex commands and manipulation of the system’s internals.
In this example, the malicious actor first connects to the target system (target.example.com) using a low-privileged user account. They then use the exploit command to exploit the vulnerability in the IBM TCP/IP Connectivity Utilities for i, escalating their privileges to root.
This vulnerability allows potential attackers to gain root access to the host operating system, leading to serious security incidents such as system compromise and data leakage. Thus, it is recommended to apply the vendor patch as soon as possible or use WAF/IDS as a temporary mitigation measure.