USN-4754-1: Python vulnerabilities

Releases

• Ubuntu 20.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

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
• python3.8 - Interactive high-level object-oriented language (version 3.8)

Details

It was discovered that Python incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code
or cause a denial of service. (CVE-2020-27619, CVE-2021-3177)

Update instructions

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

Ubuntu 20.10

• python3.8 - 3.8.6-1ubuntu0.2
• python3.8-minimal - 3.8.6-1ubuntu0.2

Ubuntu 20.04

• python3.8 - 3.8.5-1~20.04.2
• python3.8-minimal - 3.8.5-1~20.04.2

Ubuntu 18.04

• python2.7 - 2.7.17-1~18.04ubuntu1.3
• python2.7-minimal - 2.7.17-1~18.04ubuntu1.3
• python3.6 - 3.6.9-1~18.04ubuntu1.4
• python3.6-minimal - 3.6.9-1~18.04ubuntu1.4

Ubuntu 16.04

• python2.7 - 2.7.12-1ubuntu0~16.04.14
• python2.7-minimal - 2.7.12-1ubuntu0~16.04.14
• python3.5 - 3.5.2-2ubuntu0~16.04.13
• python3.5-minimal - 3.5.2-2ubuntu0~16.04.13

Ubuntu 14.04

• python2.7 - 2.7.6-8ubuntu0.6+esm8
• python2.7-minimal - 2.7.6-8ubuntu0.6+esm8
• python3.4 - 3.4.3-1ubuntu1~14.04.7+esm10
• python3.4-minimal - 3.4.3-1ubuntu1~14.04.7+esm10

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

References

• CVE-2021-3177
• CVE-2020-27619

Related notices

• USN-4754-4
• USN-4754-3
• USN-4754-5
• USN-6891-1