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Advisories

picklescan - Remote Code Execution via Incomplete Disallowed Inputs

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severity
critical
date
Affecting

  • picklescan >= 0, < 0.0.33

CWE
  • CWE-184 Incomplete List of Disallowed Inputs
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
0x-Apollyon
Description
picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller functions, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using these unblocked functions to achieve arbitrary code execution when the pickle is deserialized.

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