CVE-2025-67747Fickling has missing detection for marshal.loads and types.FunctionType in unsafe modules list

Description

Fickling is a Python pickling decompiler and static analyzer. Versions prior to 0.1.6 are missing `marshal` and `types` from the block list of unsafe module imports. Fickling started blocking both modules to address this issue. This allows an attacker to craft a malicious pickle file that can bypass fickling since it misses detections for `types.FunctionType` and `marshal.loads`. A user who deserializes such a file, believing it to be safe, would inadvertently execute arbitrary code on their system. This impacts any user or system that uses Fickling to vet pickle files for security issues. The issue was fixed in version 0.1.6.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/trailofbits/fickling/security/advisories/GHSA-565g-hwwr-4pp3 ExploitThird Party Advisory
• https://github.com/trailofbits/fickling/pull/186 Issue Tracking
• https://github.com/trailofbits/fickling/commit/4e34561301bda1450268d1d7b0b2b151de33b913 Patch
• https://github.com/trailofbits/fickling/releases/tag/v0.1.6 Release Notes