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Advisories

picklescan - Remote Code Execution via Unblocked Standard Library Modules

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severity
critical
date
Affecting

  • picklescan >= 0, < 1.0.4

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
yash2998chhabria
Description
picklescan before 1.0.4 fails to block at least seven Python standard library modules (including uuid, _osx_support, _aix_support, _pyrepl.pager, and imaplib) exposing eight functions that provide direct arbitrary command execution. Attackers can craft malicious pickle files importing these unblocked modules to achieve remote code execution while bypassing picklescan's safety validation entirely.

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