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Debian LTS Advisory DLA-4087-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Sean Whitton
March 20, 2025 https://wiki.debian.org/LTS
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Package : python3.9
Version : 3.9.2-1+deb11u3
CVE ID : CVE-2022-0391 CVE-2025-0938 CVE-2025-1795
Multiple vulnerabilities were discovered in modules shipped with
cpython 3.9, the primary interpreter for the Python programming
language.
CVE-2022-0391
Functions in the urllib.parse module did not sanitize URLs to remove
newline characters, which could lead to injection attacks.
CVE-2025-0938
Functions in the urllib.parse and urlparse modules accepted domain
names containing square brackets, which isn't valid. These
delimiters are only permitted for IPv6 and IPvFuture hosts. This
problem could result in differential parsing between the Python URL
parser and other specification-compliant URL parsers.
CVE-2025-1795
The implementations of e-mail header parsing and folding would
encode the comma used to separate list items, which could cause
receiving applications to interpret two items in the list as though
they were one item.
For Debian 11 bullseye, these problems have been fixed in version
3.9.2-1+deb11u3.
We recommend that you upgrade your python3.9 packages.
For the detailed security status of python3.9 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/python3.9
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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