CVE-2023-24288 in Portable Puzzle Collection
Summary
by MITRE • 09/14/2026
An issue in Portable Puzzle Collection before 20230116.5782e29 allows attackers to cause a Denial of Service (DoS) via creating an excessive amount of save states.
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Analysis
by VulDB Data Team • 09/14/2026
The vulnerability identified in the Portable Puzzle Collection prior to version 20230116.5782e29 represents a classic resource exhaustion flaw that impacts system stability and availability. This software, which typically serves as a frontend for various puzzle emulation cores or standalone puzzle applications, failed to implement adequate safeguards against unbounded state creation. Specifically, the application allows users to generate an excessive number of save states without enforcing limits on memory allocation, file handle usage, or storage capacity. In many emulator-based environments, each save state represents a complete snapshot of the system's volatile and non-volatile memory at a specific point in time. When these snapshots are accumulated indefinitely, they consume increasing amounts of RAM and disk space until critical thresholds are breached.
From a technical perspective, this flaw aligns with CWE-400, which classifies issues related to Uncontrolled Resource Consumption. The underlying mechanism involves the application's failure to validate or restrict the quantity of save operations initiated by the user or automated scripts. Because each save state operation likely allocates new memory buffers and writes data to disk without checking available resources, an attacker can exploit this behavior through a simple loop that continuously creates these states. This leads to a gradual degradation of system performance as swap space is exhausted, followed eventually by application crashes or operating-level instability due to out-of-memory conditions. The lack of garbage collection mechanisms for old save files further exacerbates the issue, allowing storage quotas on local drives to be filled rapidly.
The operational impact of this vulnerability is primarily centered around Denial of Service (DoS). For end-users relying on Portable Puzzle Collection for entertainment or testing purposes, an attacker who can trigger this condition locally or remotely if networked features are enabled could render the application unresponsive. In a shared computing environment, such as a public kiosk or a multi-user workstation, this vulnerability could be used to disrupt service for other users by consuming system resources until the entire machine becomes sluggish or requires a hard reboot. While direct code execution is not indicated in the description, the potential for secondary impacts exists if the resource exhaustion leads to unexpected behavior in dependent services or causes data corruption during abrupt termination of processes.
This type of vulnerability maps directly to MITRE ATT&CK technique T1499, Endpoint Denial of Service, specifically under sub-techniques involving resource exhaustion via application layer attacks. It also relates to CWE-787, Out-of-bounds Write, if the internal data structures managing save states are not properly bounded, although Uncontrolled Resource Consumption is the more precise classification for this specific symptom set. The absence of rate limiting or maximum state count enforcement indicates a design oversight where usability features were prioritized over robustness and security controls.
Mitigation strategies should focus on implementing strict resource management policies within the application code. Developers must enforce hard limits on the number of concurrent save states allowed, ensuring that older states are automatically purged when new ones are created to maintain a fixed-size queue or ring buffer. Additionally, memory allocation for each state should be capped at realistic maximums based on the emulated hardware's specifications. Input validation routines should monitor cumulative disk usage and prevent further write operations once predefined thresholds are reached. For users unable to immediately update to version 20230116.5782e29 or later, manual monitoring of save file directories and periodic cleanup can serve as a temporary workaround to mitigate the risk of system instability caused by excessive state accumulation.