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Advisories

picklescan - Remote Code Execution via timeit.timeit() Detection Bypass

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severity
high
date
Affecting

  • picklescan >= 0, < 0.0.25

CWE
  • CWE-184 Incomplete List of Disallowed Inputs
CVSS
7.6
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
SeaW1nd
Description
picklescan before 0.0.25 fails to detect malicious pickle files that use timeit.timeit() in the __reduce__ method, allowing remote code execution. Attackers can craft pickle files that import dangerous libraries like os and execute arbitrary system commands, which evade picklescan detection and execute when pickle.load() is called.

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