Description

Portable Puzzle Collection before 20230116.5782e29 was discovered to contain a buffer overflow via the "M" command.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "2.9",
  "pubDate": "2026-09-14T05:16:56.410Z",
  "pubdate": "2026-09-14T05:16:56.410Z",
  "executiveSummary": "A buffer overflow vulnerability exists in the Portable Puzzle Collection prior to version 20230116.5782e29.\nThe flaw is triggered via the 'M' command, which improperly manages input buffers during processing.\nSuccessful exploitation allows an attacker to cause a memory corruption event, which may lead to application crashes (Denial of Service) or potential arbitrary code execution within the context of the running process.\nThe vulnerability affects users running versions of the Portable Puzzle Collection released prior to 20230116.5782e29.\nRisk implications include potential system instability and compromise if an attacker can inject malicious payloads via the vulnerable command input.\nThe exploit requires interaction with the specific application functionality, typically involving the transmission of specially crafted input data that exceeds allocated memory boundaries.",
  "technicalDetails": "The vulnerability originates from a memory handling defect within the Portable Puzzle Collection when processing the 'M' command.\nThe root cause is identified as an insufficient bounds check or incorrect buffer size calculation during the parsing of input associated with the 'M' command, leading to a classical stack-based or heap-based buffer overflow.\nWhen the application receives a command string triggered by 'M' containing data that exceeds the pre-allocated buffer length, the excess data overwrites adjacent memory addresses.\nBecause the buffer is located in a memory area that may contain critical control data, such as function pointers or return addresses on the stack, the overflow allows an attacker to manipulate the execution flow of the application.\nThe attack flow proceeds as follows: 1) The attacker initiates an interaction with the Portable Puzzle Collection that triggers the handling of an 'M' command. 2) The attacker submits a malicious input payload specifically crafted to exceed the expected character limit for this command. 3) The application's input parser fails to enforce boundary constraints, writing the excessive data into memory regions outside the intended buffer. 4) The application experiences memory corruption, resulting in an immediate crash or, if the payload is expertly crafted, the redirection of the instruction pointer to attacker-controlled memory.\nThis vulnerability is present in all versions prior to 20230116.5782e29. It does not appear to require authentication or elevated privileges beyond the ability to interact with the application interface. The vulnerability is local to the instance of the software but could be leveraged in scenarios where the input is provided via networked interfaces or shared files.\nPost-exploitation impact varies depending on the success of the memory overwrite. At a minimum, it facilitates a Denial of Service through process termination. In more sophisticated scenarios, it enables arbitrary code execution, granting the attacker the same permissions as the application process, potentially allowing for further system compromise or data exfiltration."
}