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Advisories

picklescan - Unsafe Deserialization via lib2to3.pgen2.grammar.Grammar.loads

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severity
high
date
Affecting

  • picklescan >= 0, < 0.0.29

CWE
  • CWE-502 Deserialization of Untrusted Data
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
FredericDT
Description
picklescan before 0.0.29 fails to detect malicious pickle payloads that utilize lib2to3.pgen2.grammar.Grammar.loads in the reduce method, allowing remote code execution. Attackers can craft pickle files embedding dangerous code that evades picklescan detection and executes during pickle.load() deserialization.

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