CVE-2025-64512

Name	CVE-2025-64512
Description	Pdfminer.six is a community maintained fork of the original PDFMiner, a tool for extracting information from PDF documents. Prior to version 20251107, pdfminer.six will execute arbitrary code from a malicious pickle file if provided with a malicious PDF file. The `CMapDB._load_data()` function in pdfminer.six uses `pickle.loads()` to deserialize pickle files. These pickle files are supposed to be part of the pdfminer.six distribution stored in the `cmap/` directory, but a malicious PDF can specify an alternative directory and filename as long as the filename ends in `.pickle.gz`. A malicious, zipped pickle file can then contain code which will automatically execute when the PDF is processed. Version 20251107 fixes the issue.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-4374-1, DLA-4374-2, DSA-6062-1
Debian Bugs	1120642

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
pdfminer (PTS)	bullseye	20200726-1	vulnerable
	bullseye (security)	20200726-1+deb11u2	fixed
	bookworm, bookworm (security)	20221105+dfsg-1.1~deb12u1	fixed
	trixie (security), trixie	20221105+dfsg-1.1~deb13u1	fixed
	forky, sid	20221105+dfsg-1.1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Origin	Debian Bugs
pdfminer	source	bullseye	20200726-1+deb11u2	DLA-4374-2
pdfminer	source	bookworm	20221105+dfsg-1.1~deb12u1	DSA-6062-1
pdfminer	source	trixie	20221105+dfsg-1.1~deb13u1	DSA-6062-1
pdfminer	source	(unstable)	(unfixed)		1120642

Notes

https://github.com/pdfminer/pdfminer.six/security/advisories/GHSA-wf5f-4jwr-ppcp
Fixed by: https://github.com/pdfminer/pdfminer.six/commit/b808ee05dd7f0c8ea8ec34bdf394d40e63501086 (20251107)
Initial fix incomplete: https://github.com/pdfminer/pdfminer.six/pull/1172
Proper fix by replacing pickle for SON for CMap storage.
Fixed by: https://github.com/pdfminer/pdfminer.six/commit/41a247c2d66ea962823459403b828375ccc7bd33 (20251230)