USN-4151-1: Python vulnerabilities

Releases

• Ubuntu 19.04
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• python2.7 - 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 parsed certain email addresses. A
remote attacker could possibly use this issue to trick Python applications
into accepting email addresses that should be denied. (CVE-2019-16056)

It was discovered that the Python documentation XML-RPC server incorrectly
handled certain fields. A remote attacker could use this issue to execute a
cross-site scripting (XSS) attack. (CVE-2019-16935)

Update instructions

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

Ubuntu 19.04

• python2.7 - 2.7.16-2ubuntu0.2
• python2.7-minimal - 2.7.16-2ubuntu0.2
• python3.7 - 3.7.3-2ubuntu0.2
• python3.7-minimal - 3.7.3-2ubuntu0.2

Ubuntu 18.04

• python2.7 - 2.7.15-4ubuntu4~18.04.2
• python2.7-minimal - 2.7.15-4ubuntu4~18.04.2
• python3.6 - 3.6.8-1~18.04.3
• python3.6-minimal - 3.6.8-1~18.04.3

Ubuntu 16.04

• python2.7 - 2.7.12-1ubuntu0~16.04.9
• python2.7-minimal - 2.7.12-1ubuntu0~16.04.9
• python3.5 - 3.5.2-2ubuntu0~16.04.9
• python3.5-minimal - 3.5.2-2ubuntu0~16.04.9

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

References

• CVE-2019-16056
• CVE-2019-16935

Related notices

• USN-4151-2
• USN-6891-1