CVE-2011-1521: Medium severity python 2.7 vulnerability

Published Mar 24, 2011
·
Updated

A security flaw was found in the way handlers for ftp:// and file:// URL schemes in the Python urllib and urllib2 extensible libraries processed the urllib open URL request. A remote attacker could use this flaw to access sensitive information or cause a denial of service (excessive CPU and memory use) of a Python web application, processing URLs, via a specially-crafted urllib open URL request.

Other sources

The urllib and urllib2 modules in Python 2.x before 2.7.2 and 3.x befo ...

Debian

Affected Software

40 affected componentsFixes available
Python Python=2.0
Python Python=2.0.1
Python Python=2.1
Python Python=2.1.1
Python Python=2.1.2
Python Python=2.1.3
Python Python=2.2
Python Python=2.2.1
Python Python=2.2.2
Python Python=2.2.3
Python Python=2.3.1
Python Python=2.3.2
Python Python=2.3.3
Python Python=2.3.4
Python Python=2.3.5
Python Python=2.3.7
Python Python=2.4.1
Python Python=2.4.2
Python Python=2.4.3
Python Python=2.4.4
Python Python=2.4.6
Python Python=2.5.1
Python Python=2.5.2
Python Python=2.5.3
Python Python=2.5.4
Python Python=2.6.1
Python Python=2.6.4
Python Python=2.6.5
Python Python=2.6.6
Python Python=2.6.7
Python Python=2.7.1
Python Python=3.0
Python Python=3.0.1
Python Python=3.1
Python Python=3.1.1
Python Python=3.1.2
Python Python=3.1.3
Python Python=3.2
Python Python=3.2-alpha
debian/python2.7
2.7.18-8+deb11u1

Event History

Mar 24, 2011
Data Sourced
via Red Hat·04:33 PM
DescriptionSeverityAffected Software
May 24, 2011
CVE Published
via MITRE·11:00 PM
Data Sourced
via MITRE·11:00 PM
Description
Jan 11, 2024
Data Sourced
via Launchpad·09:54 PM
Description
Sep 15, 2024
Data Sourced
via Ubuntu·10:43 PM
RemedyDescriptionSeverityAffected Software
Feb 26, 2025
Data Sourced
via Debian·11:58 PM
DescriptionAffected Software
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Frequently Asked Questions

1

What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2011-1521.

2

What is the severity level of CVE-2011-1521?

The severity level of CVE-2011-1521 is medium.

3

How does CVE-2011-1521 affect Python?

CVE-2011-1521 affects Python versions 2.x before 2.7.2 and 3.x before 3.2.1.

4

What is the impact of CVE-2011-1521?

The vulnerability in CVE-2011-1521 allows remote attackers to obtain sensitive information or cause a denial of service.

5

How can I fix CVE-2011-1521?

To fix CVE-2011-1521, update Python to version 2.7.2 or 3.2.1, depending on the version you are using.

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