: Modern ZIP formats can detect when multiple files within an archive point to the same data block, preventing the recursive explosion. Summary Table Description File Type Zip Bomb (Decompression Bomb) Primary Goal Resource Exhaustion (DoS) Method Recursive compression and pattern repetition Max Size Can reach Petabyte scale ( 101510 to the 15th power Risk Level High for unpatched/automated systems (5) SPECIFICATION(S) NOTE TO TENDERERS:
The file is structured like a "nesting doll." Inside the main ZIP file are 16 smaller ZIP files. Inside each of those are 16 more, and so on. nickel.zip
: When a user or a server-side process attempts to decompress "nickel.zip," the system's hard drive space is instantly filled, and the CPU reaches 100% utilization. : Modern ZIP formats can detect when multiple
Compression algorithms like work by finding repetitive patterns. If a file contains nothing but the same character (e.g., the letter "a") repeated a trillion times, the algorithm can compress it down to almost nothing. : When a user or a server-side process
Most modern operating systems and security software have evolved to neutralize threats like "nickel.zip":