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Debian LTS Advisory DLA-3477-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                          Adrian Bunk
June 30, 2023                                 https://wiki.debian.org/LTS
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Package        : python3.7
Version        : 3.7.3-2+deb10u5
CVE ID         : CVE-2015-20107 CVE-2020-10735 CVE-2021-3426 CVE-2021-3733 
                 CVE-2021-3737 CVE-2021-4189 CVE-2022-45061

Several vulnerabilities were fixed in the Python3 interpreter.

CVE-2015-20107

    The mailcap module did not add escape characters into commands 
    discovered in the system mailcap file.

CVE-2020-10735

    Prevent DoS with very large int.

CVE-2021-3426

    Remove the pydoc getfile feature which could be abused to read 
    arbitrary files on the disk.

CVE-2021-3733

    Regular Expression Denial of Service in urllib's AbstractBasicAuthHandler class.

CVE-2021-3737

    Infinite loop in the HTTP client code.

CVE-2021-4189

    Make ftplib not trust the PASV response.

CVE-2022-45061

    Quadratic time in the IDNA decoder.

For Debian 10 buster, these problems have been fixed in version
3.7.3-2+deb10u5.

We recommend that you upgrade your python3.7 packages.

For the detailed security status of python3.7 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/python3.7

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