—

PYSEC-2022-42998

Quick fix

PYSEC-2022-42998 — py7zr: upgrade to the fixed version with the command below.

pip install --upgrade 'py7zr>=1bb43f17515c7f69673a1c88ab9cc72a7bbef406'

Details

A directory traversal vulnerability in the SevenZipFile.extractall() function of the python library py7zr v0.20.0 and earlier allows attackers to write arbitrary files via extracting a crafted 7z file.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/py7zr

Introduced in: 0Fixed in: 1bb43f17515c7f69673a1c88ab9cc72a7bbef406

Fixpip install --upgrade 'py7zr>=1bb43f17515c7f69673a1c88ab9cc72a7bbef406'

References

https://github.com/miurahr/py7zr/commit/1bb43f17515c7f69673a1c88ab9cc72a7bbef406[FIX]
http://packetstormsecurity.com/files/170127/py7zr-0.20.0-Directory-Traversal.html[EVIDENCE]
http://packetstormsecurity.com/files/170127/py7zr-0.20.0-Directory-Traversal.html[WEB]
http://packetstormsecurity.com/files/170127/py7zr-0.20.0-Directory-Traversal.html[ADVISORY]
https://lessonsec.com/cve/cve-2022-44900/[EVIDENCE]
https://lessonsec.com/cve/cve-2022-44900/[WEB]
https://github.com/advisories/GHSA-m8xw-9x5x-6vh3[ADVISORY]