Executive Summary

Summary
Title Python vulnerabilities
Informations
Name USN-4333-1 First vendor Publication 2020-04-21
Vendor Ubuntu Last vendor Modification 2020-04-21
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 3.6 Temporal Score 6.5
Exploitabality Sub Score 2.8
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact None
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:N/A:C)
Cvss Base Score 7.1 Attack Range Network
Cvss Impact Score 6.9 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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

- Ubuntu 19.10 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS - Ubuntu 14.04 ESM - Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in Python.

Software Description: - python3.7: An interactive high-level object-oriented language - python2.7: 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 - python3.4: 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 LTS:
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 LTS:
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 ESM:
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 ESM:
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:
https://usn.ubuntu.com/4333-1
CVE-2019-18348, CVE-2020-8492

Package Information:
https://launchpad.net/ubuntu/+source/python3.7/3.7.5-2~19.10ubuntu1
https://launchpad.net/ubuntu/+source/python2.7/2.7.17-1~18.04ubuntu1
https://launchpad.net/ubuntu/+source/python3.6/3.6.9-1~18.04ubuntu1
https://launchpad.net/ubuntu/+source/python2.7/2.7.12-1ubuntu0~16.04.11
https://launchpad.net/ubuntu/+source/python3.5/3.5.2-2ubuntu0~16.04.10

Original Source

Url : http://www.ubuntu.com/usn/USN-4333-1

CWE : Common Weakness Enumeration

% Id Name
50 % CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')
50 % CWE-74 Failure to Sanitize Data into a Different Plane ('Injection')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 293
Os 6
Os 1
Os 2
Os 1

Alert History

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0
1
Date Informations
2020-05-23 13:03:46
  • Multiple Updates
2020-04-21 17:18:50
  • First insertion