Executive Summary

Summary
Title Python: Denial of Service
Informations
Name GLSA-202005-09 First vendor Publication 2020-05-14
Vendor Gentoo Last vendor Modification 2020-05-14
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

Synopsis

A vulnerability in Python could lead to a Denial of Service condition.

Background

Python is an interpreted, interactive, object-oriented programming language.

Description

An issue was discovered in urllib.request.AbstractBasicAuthHandler which allowed a remote attacker to send malicious data causing extensive regular expression backtracking.

Impact

An attacker could cause a possible Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Python 2.7 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/python-2.7.18:2.7"

All Python 3.6 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/python-3.6.10-r2:3.6"

All Python 3.7 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/python-3.7.7-r2:3.7"

All Python 3.8 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/python-3.8.2-r2:3.8"

References

[ 1 ] CVE-2020-8492 : https://nvd.nist.gov/vuln/detail/CVE-2020-8492

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website:

https://security.gentoo.org/glsa/202005-09

Original Source

Url : http://security.gentoo.org/glsa/glsa-202005-09.xml

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-400 Uncontrolled Resource Consumption ('Resource Exhaustion')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 305
Os 1

Alert History

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0
1
Date Informations
2020-05-23 13:03:44
  • Multiple Updates
2020-05-15 05:18:28
  • First insertion