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Comment by secfirstmd

7 months ago

Eh I got news for ya.

The file size problem is still an issue for many big name EDRs.

Undoubtedly. If you go poking around most any security product (the product I was referring to was not in the EDR space,) you'll see these sorts of issues all over the place.

  • It have to be the way it is.

    Scanning them are resources intensive. The choice are (1) skip scanning them; (2) treat them as malware; (3) scan them and be DoS'ed.

    (deferring the decision to human iss effectively DoS'ing your IT support team)

    • Option #4, detect the zip bomb in its compressed form, and skip over that section of the file. Just like the malware ignores the zip bomb.

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    • It does not have to be the way it is. Security vendors could do a much better job testing and red teaming their products to avoid bypasses, and have more sensible defaults.