Zip parser: tolerate 2-byte overlap in file entries (0.104.4)#642
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val-ms merged 1 commit intoCisco-Talos:dev/0.104.4from Jul 19, 2022
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The heuristic to alert on overlapping file entries is detecting some non-malicious JAR files observed in critical enterprise software. The goal with overlap detection is to alert on non-recursive zip- bombs, so this tiny overlap isn't a concern. We'll allow a 2-byte overlap so we don't alert on such zips.
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Backport of #561
The heuristic to alert on overlapping file entries is detecting some
non-malicious JAR files observed in critical enterprise software.
The goal with overlap detection is to alert on non-recursive zip-
bombs, so this tiny overlap isn't a concern.
We'll allow a 2-byte overlap so we don't alert on such zips.