USN-4333-1: Python vulnerabilities

Releases

• Ubuntu 19.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM
• Ubuntu 12.04

Packages

• python2.7 - An interactive high-level object-oriented language
• python3.4 - An interactive high-level object-oriented language
• python3.5 - An interactive high-level object-oriented language
• python3.6 - An interactive high-level object-oriented language
• python3.7 - An interactive high-level object-oriented language

Details

It was discovered that Python incorrectly stripped certain characters from
requests. A remote attacker could use this issue to perform CRLF injection.
(CVE-2019-18348)

It was discovered that Python incorrectly handled certain HTTP requests.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2020-8492)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.10

• python3.7 - 3.7.5-2~19.10ubuntu1
• python3.7-minimal - 3.7.5-2~19.10ubuntu1

Ubuntu 18.04

• python2.7 - 2.7.17-1~18.04ubuntu1
• python2.7-minimal - 2.7.17-1~18.04ubuntu1
• python3.6 - 3.6.9-1~18.04ubuntu1
• python3.6-minimal - 3.6.9-1~18.04ubuntu1

Ubuntu 16.04

• python2.7 - 2.7.12-1ubuntu0~16.04.11
• python2.7-minimal - 2.7.12-1ubuntu0~16.04.11
• python3.5 - 3.5.2-2ubuntu0~16.04.10
• python3.5-minimal - 3.5.2-2ubuntu0~16.04.10

Ubuntu 14.04

• python2.7 - 2.7.6-8ubuntu0.6+esm5
• python2.7-minimal - 2.7.6-8ubuntu0.6+esm5
• python3.4 - 3.4.3-1ubuntu1~14.04.7+esm6
• python3.4-minimal - 3.4.3-1ubuntu1~14.04.7+esm6

Ubuntu 12.04

• python2.7 - 2.7.3-0ubuntu3.17
• python2.7-minimal - 2.7.3-0ubuntu3.17

In general, a standard system update will make all the necessary changes.

References

• CVE-2019-18348
• CVE-2020-8492

Related notices

• USN-4333-2: libpython3.8-testsuite, libpython3.8-minimal, python3.8-venv, python3.8-minimal, python3.8, libpython3.8-stdlib, idle-python3.8, python3.8-doc, python3.8-examples, libpython3.8-dev, python3.8-dev, libpython3.8
• USN-4754-3: python3.7-doc, python3.7-venv, python2.7-minimal, libpython3.7-minimal, python2.7-dev, libpython3.7-dev, libpython3.7-testsuite, libpython2.7-testsuite, python3.8-minimal, libpython3.8-stdlib, python2.7, libpython2.7-dev, libpython2.7-minimal, libpython3.8-testsuite, libpython3.7-stdlib, idle-python3.7, python3.8-venv, python3.7-minimal, python3.8, python3.7-dev, python2.7-examples, libpython3.8, libpython3.8-minimal, idle-python2.7, libpython2.7-stdlib, python2.7-doc, python3.7-examples, python3.8-examples, idle-python3.8, libpython3.7, libpython3.8-dev, python3.8-dev, libpython2.7, python3.7
• USN-5200-1: python3.7-doc, python3.7-venv, libpython3.7-minimal, libpython3.7-dev, libpython3.7-testsuite, python3.8-minimal, libpython3.8-stdlib, libpython3.8-testsuite, libpython3.7-stdlib, idle-python3.7, python3.8-venv, python3.7-minimal, python3.8, python3.7-dev, libpython3.8, libpython3.8-minimal, python3.7-examples, python3.8-examples, idle-python3.8, libpython3.7, libpython3.8-dev, python3.8-dev, python3.7