CyberRota Analysis
AI-GeneratedNanaZip versions prior to 6.5.1749.0 are vulnerable due to improper validation in the UFS and FFS image handler, allowing attackers to exploit 32-bit fields that can lead to excessive memory allocations. This can result in memory exhaustion or termination of the process when opening or extracting specially crafted UFS images. Users and organizations utilizing NanaZip for file handling should prioritize updating to the latest version to mitigate potential denial-of-service risks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
NanaZip is the 7-Zip derivative intended for the modern Windows experience. Prior to 6.5.1749.0, NanaZip's UFS and FFS image handler in NanaZip.Codecs.Archive.Ufs.cpp validates the superblock block size only against the MINBSIZE lower bound and does not validate the fs_fsize fragment size, allowing attacker-controlled 32-bit fields to flow into indirect-block, directory, and extraction buffer allocations. A tiny crafted UFS image can force multi-gigabyte allocations during open or extraction, causing memory exhaustion or process termination. This issue is fixed in version 6.5.1749.0.