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Advisories

picklescan - Arbitrary File Creation via logging.FileHandler Deserialization

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severity
medium
date
Affecting

  • picklescan >= 0, < 1.0.1

CWE
  • CWE-502 Deserialization of Untrusted Data
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Credit
ez-lbz
Description
picklescan before 1.0.1 contains an unsafe pickle deserialization vulnerability allowing unauthenticated attackers to create arbitrary zero-byte files via logging.FileHandler class instantiation. Attackers can exploit this by crafting malicious pickle payloads to bypass RCE blocklists and create lock files or other filesystem artifacts, potentially causing denial of service or application disruption.

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