USN-5083-1: Python vulnerabilities
16 September 2021
Several security issues were fixed in Python.
Releases
Packages
- python3.4 - An interactive high-level object-oriented language
- python3.5 - An interactive high-level object-oriented language
Details
It was discovered that Python incorrectly handled certain RFCs.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 16.04 ESM. (CVE-2021-3733)
It was discovered that Python incorrectly handled certain
server responses. An attacker could possibly use this issue to
cause a denial of service. (CVE-2021-3737)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
-
python3.5
-
3.5.2-2ubuntu0~16.04.13+esm1
Available with Ubuntu Pro
-
python3.5-minimal
-
3.5.2-2ubuntu0~16.04.13+esm1
Available with Ubuntu Pro
Ubuntu 14.04
-
python3.4
-
3.4.3-1ubuntu1~14.04.7+esm11
Available with Ubuntu Pro
-
python3.4-minimal
-
3.4.3-1ubuntu1~14.04.7+esm11
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-5199-1: libpython3.6-dev, python3.6-dev, python3.6-doc, libpython3.6-testsuite, python3.6-minimal, python3.6, python3.6-examples, libpython3.6-stdlib, python3.6-venv, libpython3.6-minimal, libpython3.6, idle-python3.6
- USN-5200-1: python3.8-dev, libpython3.8-stdlib, python3.7-doc, libpython3.8-minimal, python3.7-minimal, libpython3.7-stdlib, libpython3.7-dev, libpython3.8-testsuite, libpython3.7-minimal, python3.8-examples, libpython3.7, python3.7, libpython3.8, python3.7-examples, python3.8, python3.8-minimal, python3.7-venv, python3.8-venv, python3.7-dev, libpython3.8-dev, idle-python3.7, libpython3.7-testsuite, idle-python3.8
- USN-6891-1: libpython3.8-minimal, python3.10-venv, python3.5-minimal, python3.12, libpython3.10-testsuite, python3.10-dev, libpython3.6, libpython3.10-minimal, idle-python3.11, libpython3.6-testsuite, libpython3.10-stdlib, python3.11, python3.11-venv, libpython3.7, libpython3.6-minimal, libpython3.11-stdlib, python3.9-dev, libpython3.12, libpython3.12-dev, python3.7-examples, python3.12-minimal, libpython3.5-stdlib, python3.7-dev, idle-python3.10, python3.8-full, python3.9, libpython3.7-testsuite, libpython3.9, libpython3.8-stdlib, libpython3.11, python3.6-dev, python3.7-minimal, libpython3.12-minimal, python3.5-examples, python3.5-doc, python3.11-examples, libpython3.7-dev, libpython3.7-minimal, python3.12-examples, python3.9-full, python3.11-doc, python3.5-venv, python3.11-nopie, python3.6-minimal, python3.10-nopie, python3.8, python3.6-examples, idle-python3.5, libpython3.11-minimal, python3.8-venv, python3.12-nopie, python3.10-doc, libpython3.8-dev, python3.11-minimal, python3.8-doc, python3.8-dev, libpython3.9-stdlib, python3.7-doc, libpython3.8-testsuite, python3.9-venv, python3.12-dev, python3.12-full, python3.5, python3.8-examples, python3.7, python3.10-examples, libpython3.6-dev, libpython3.5-testsuite, libpython3.8, libpython3.6-stdlib, python3.10-full, libpython3.12-stdlib, python3.6-venv, idle-python3.6, python3.12-venv, python3.6-doc, python3.6, libpython3.10-dev, idle-python3.7, libpython3.5-dev, python3.5-dev, idle-python3.9, libpython3.11-testsuite, libpython3.9-testsuite, python3.11-full, python3.9-minimal, libpython3.12-testsuite, libpython3.7-stdlib, idle-python3.12, libpython3.5, python3.12-doc, python3.9-doc, libpython3.10, libpython3.5-minimal, libpython3.11-dev, python3.10, libpython3.9-dev, python3.10-minimal, python3.8-minimal, python3.11-dev, python3.7-venv, libpython3.9-minimal, python3.9-examples, idle-python3.8
- USN-5201-1: libpython3.9, libpython3.8-stdlib, libpython3.9-stdlib, python3.8-dev, libpython3.8-minimal, idle-python3.9, libpython3.8-testsuite, python3.9-venv, python3.9-doc, python3.9-full, python3.8-examples, python3.9-dev, libpython3.8, libpython3.9-dev, python3.9-minimal, python3.8, python3.8-minimal, idle-python3.8, python3.8-venv, libpython3.9-minimal, python3.9-examples, python3.8-full, libpython3.8-dev, python3.9, python3.8-doc, libpython3.9-testsuite