Executive Summary

This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Title Python vulnerabilities
Name USN-4151-1 First vendor Publication 2019-10-09
Vendor Ubuntu Last vendor Modification 2019-10-09
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS


Several security issues were fixed in Python.

Software Description: - python2.7: An interactive high-level object-oriented language - python3.7: An interactive high-level object-oriented language - python3.6: An interactive high-level object-oriented language - python3.5: An interactive high-level object-oriented language


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 LTS:
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 LTS:
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.

CVE-2019-16056, CVE-2019-16935

Package Information:

Original Source

Url : http://www.ubuntu.com/usn/USN-4151-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-79 Failure to Preserve Web Page Structure ('Cross-site Scripting') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

Application 293

Alert History

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Date Informations
2019-10-11 00:23:56
  • Multiple Updates
2019-10-09 17:19:08
  • First insertion