medium
6.4
CWE
399
Advisory Published
CVE Published
Updated

CVE-2011-1521

First published: Thu 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.

Credit: cve@mitre.org cve@mitre.org

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

Remedy

http://bugs.python.org/issue11662

Remedy

http://hg.python.org/cpython/rev/96a6c128822b/

Remedy

http://hg.python.org/cpython/rev/b2934d98dac1/

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=690560

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Reference Links

Frequently Asked Questions

  • What is the vulnerability ID for this issue?

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

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

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

  • 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.

  • 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.

  • 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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