USN-3817-1: Python vulnerabilities

Releases

• 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

Details

It was discovered that Python incorrectly handled large amounts of data. A
remote attacker could use this issue to cause Python to crash, resulting in
a denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2018-1000030)

It was discovered that Python incorrectly handled running external commands
in the shutil module. A remote attacker could use this issue to cause
Python to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2018-1000802)

It was discovered that Python incorrectly used regular expressions
vulnerable to catastrophic backtracking. A remote attacker could possibly
use this issue to cause a denial of service. This issue only affected
Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2018-1060, CVE-2018-1061)

It was discovered that Python failed to initialize Expat's hash salt. A
remote attacker could possibly use this issue to cause hash collisions,
leading to a denial of service. (CVE-2018-14647)

Update instructions

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

Ubuntu 18.04

• python2.7 - 2.7.15~rc1-1ubuntu0.1
• python2.7-minimal - 2.7.15~rc1-1ubuntu0.1

Ubuntu 16.04

• python2.7 - 2.7.12-1ubuntu0~16.04.4
• python2.7-minimal - 2.7.12-1ubuntu0~16.04.4
• python3.5 - 3.5.2-2ubuntu0~16.04.5
• python3.5-minimal - 3.5.2-2ubuntu0~16.04.5

Ubuntu 14.04

• python2.7 - 2.7.6-8ubuntu0.5
• python2.7-minimal - 2.7.6-8ubuntu0.5
• python3.4 - 3.4.3-1ubuntu1~14.04.7
• python3.4-minimal - 3.4.3-1ubuntu1~14.04.7

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

References

• CVE-2018-1000030
• CVE-2018-1000802
• CVE-2018-1060
• CVE-2018-1061
• CVE-2018-14647

Related notices

• USN-3817-2: python2.7-minimal, python2.7
• USN-6891-1: python3.12-full, python3.6, libpython3.12-minimal, python3.12, libpython3.7-stdlib, python3.11-doc, libpython3.5, python3.8, python3.10-dev, python3.8-minimal, python3.5-minimal, libpython3.10, python3.10-examples, libpython3.9-dev, python3.10-minimal, libpython3.12, python3.9-examples, idle-python3.9, python3.6-dev, libpython3.12-testsuite, python3.8-examples, libpython3.5-dev, python3.7, idle-python3.5, python3.9-minimal, python3.7-venv, python3.12-nopie, python3.11-examples, python3.11-full, libpython3.11, libpython3.9-minimal, libpython3.8-dev, python3.8-full, libpython3.6, libpython3.11-stdlib, python3.9, libpython3.9-stdlib, libpython3.7-testsuite, python3.6-minimal, libpython3.12-stdlib, python3.12-minimal, python3.5-doc, python3.9-venv, python3.7-minimal, python3.11-dev, libpython3.7, libpython3.10-stdlib, python3.10-venv, python3.5-venv, idle-python3.8, libpython3.11-minimal, libpython3.10-testsuite, libpython3.12-dev, libpython3.10-dev, python3.7-doc, python3.12-dev, python3.6-venv, libpython3.9, libpython3.6-testsuite, python3.11, libpython3.5-stdlib, python3.6-doc, libpython3.8, python3.6-examples, python3.10, libpython3.7-minimal, idle-python3.11, libpython3.5-minimal, libpython3.7-dev, libpython3.8-minimal, python3.5-dev, idle-python3.10, python3.11-venv, python3.9-dev, python3.10-full, python3.5, python3.11-minimal, python3.12-venv, python3.9-doc, python3.10-doc, python3.7-dev, python3.11-nopie, python3.7-examples, libpython3.11-dev, python3.12-examples, python3.8-venv, idle-python3.6, libpython3.9-testsuite, libpython3.8-stdlib, idle-python3.7, libpython3.6-dev, python3.8-dev, libpython3.6-stdlib, idle-python3.12, python3.12-doc, libpython3.8-testsuite, libpython3.10-minimal, python3.8-doc, libpython3.6-minimal, libpython3.5-testsuite, python3.10-nopie, libpython3.11-testsuite, python3.9-full, python3.5-examples