CyberRota Analysis
AI-GeneratedNanaZip versions from 1.0.88.0 to 6.0.1698.0 and preview version 6.5.1742.0 are vulnerable due to improper handling of decompression errors in the Lz4Decode function, which allows attackers to exploit memory corruption through crafted input. This can lead to arbitrary code execution or application crashes, posing a significant risk to users handling untrusted archives. Organizations using affected versions should prioritize upgrading to the patched versions to mitigate potential exploitation risks.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
NanaZip is the 7-Zip derivative intended for the modern Windows experience. From version 1.0.88.0 until stable version 6.0.1698.0 and preview version 6.5.1742.0, the Lz4Decode function in NanaZip.Core/SevenZip/CPP/7zip/Archive/SquashfsHandler.cpp rejects only a zero return from LZ4_decompress_safe even though malformed input produces a negative error value. The negative int is converted to the unsigned SizeT destLen and then truncated into outBufWasWrittenSize, causing ReadBlock to trust an attacker-inflated _cachedUnpackBlockSize. During fragment extraction, an attacker-controlled inode Offset can make memcpy read beyond the _cachedBlock heap allocation and place adjacent heap contents in the extracted file, or crash the process. This issue is fixed in stable version 6.0.1698.0 and preview version 6.5.1742.0.