Bug#1032091: py7zr: CVE-2022-40152

[Moritz Mühlenhoff]

Source: py7zr
X-Debbugs-CC: te...@security.debian.org
Severity: grave
Tags: security

Hi,

The following vulnerability was published for py7zr.

CVE-2022-40152[0]:
| Those using Woodstox to parse XML data may be vulnerable to Denial of
| Service attacks (DOS) if DTD support is enabled. If the parser is
| running on user supplied input, an attacker may supply content that
| causes the parser to crash by stackoverflow. This effect may support a
| denial of service attack.

https://github.com/miurahr/py7zr/commit/1bb43f17515c7f69673a1c88ab9cc72a7bbef406 (v0.20.1)
https://lessonsec.com/cve/cve-2022-44900/


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2022-40152
https://www.cve.org/CVERecord?id=CVE-2022-40152

Please adjust the affected versions in the BTS as needed.

[yokota]

Hello, py7zr maintainer.

I was pushed some commits for Debain salsa repository to fix CVE-2022-44900 .
https://salsa.debian.org/python-team/packages/py7zr/-/merge_requests/2

--
YOKOTA