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Vulnerability Details : CVE-2011-1521

The urllib and urllib2 modules in Python 2.x before 2.7.2 and 3.x before 3.2.1 process Location headers that specify redirection to file: URLs, which makes it easier for remote attackers to obtain sensitive information or cause a denial of service (resource consumption) via a crafted URL, as demonstrated by the file:///etc/passwd and file:///dev/zero URLs.
Publish Date : 2011-05-24 Last Update Date : 2014-02-20
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceObtain Information
CWE ID 399

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate
AV:N/AC:L/Au:N/C:P/I:N/A:P 2011-03-24 2011-03-24
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- Related OVAL Definitions

Title Definition Id Class Family
CVE-2011-1521 unix
DEPRECATED: ELSA-2011-0554 -- python security, bug fix, and enhancement update (moderate) oval:org.mitre.oval:def:28032 unix
DEPRECATED: ELSA-2011-0492 -- python security update (moderate) oval:org.mitre.oval:def:28060 unix
ELSA-2011:0492: python security update (Moderate) oval:org.mitre.oval:def:23229 unix
ELSA-2011:0554: python security, bug fix, and enhancement update (Moderate) oval:org.mitre.oval:def:23473 unix
RHSA-2011:0491: python security update (Moderate) oval:com.redhat.rhsa:def:20110491 unix
RHSA-2011:0492: python security update (Moderate) oval:org.mitre.oval:def:21923 unix
RHSA-2011:0492: python security update (Moderate) oval:com.redhat.rhsa:def:20110492 unix
RHSA-2011:0554: python security, bug fix, and enhancement update (Moderate) oval:com.redhat.rhsa:def:20110554 unix
RHSA-2011:0554: python security, bug fix, and enhancement update (Moderate) oval:org.mitre.oval:def:21626 unix
USN-1596-1 -- python2.6 vulnerabilities oval:org.mitre.oval:def:18043 unix
VMware ESXi and ESX updates to third party library and ESX Service Console oval:org.mitre.oval:def:20200 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2011-1521

# Product Type Vendor Product Version Update Edition Language
1 Application Python Python 2.0 Version Details Vulnerabilities
2 Application Python Python 2.0.1 Version Details Vulnerabilities
3 Application Python Python 2.1 Version Details Vulnerabilities
4 Application Python Python 2.1.1 Version Details Vulnerabilities
5 Application Python Python 2.1.2 Version Details Vulnerabilities
6 Application Python Python 2.1.3 Version Details Vulnerabilities
7 Application Python Python 2.2 Version Details Vulnerabilities
8 Application Python Python 2.2.1 Version Details Vulnerabilities
9 Application Python Python 2.2.2 Version Details Vulnerabilities
10 Application Python Python 2.2.3 Version Details Vulnerabilities
11 Application Python Python 2.3 Version Details Vulnerabilities
12 Application Python Python 2.3.1 Version Details Vulnerabilities
13 Application Python Python 2.3.2 Version Details Vulnerabilities
14 Application Python Python 2.3.3 Version Details Vulnerabilities
15 Application Python Python 2.3.4 Version Details Vulnerabilities
16 Application Python Python 2.3.5 Version Details Vulnerabilities
17 Application Python Python 2.3.7 Version Details Vulnerabilities
18 Application Python Python 2.4 Version Details Vulnerabilities
19 Application Python Python 2.4.1 Version Details Vulnerabilities
20 Application Python Python 2.4.2 Version Details Vulnerabilities
21 Application Python Python 2.4.3 Version Details Vulnerabilities
22 Application Python Python 2.4.4 Version Details Vulnerabilities
23 Application Python Python 2.4.6 Version Details Vulnerabilities
24 Application Python Python 2.5 Version Details Vulnerabilities
25 Application Python Python 2.5.1 Version Details Vulnerabilities
26 Application Python Python 2.5.2 Version Details Vulnerabilities
27 Application Python Python 2.5.3 Version Details Vulnerabilities
28 Application Python Python 2.5.4 Version Details Vulnerabilities
29 Application Python Python 2.6 Version Details Vulnerabilities
30 Application Python Python 2.6.1 Version Details Vulnerabilities
31 Application Python Python 2.6.4 Version Details Vulnerabilities
32 Application Python Python 2.6.5 Version Details Vulnerabilities
33 Application Python Python 2.6.6 Version Details Vulnerabilities
34 Application Python Python 2.6.7 Version Details Vulnerabilities
35 Application Python Python 2.7 Version Details Vulnerabilities
36 Application Python Python 2.7.1 Version Details Vulnerabilities
37 Application Python Python 3.0 Version Details Vulnerabilities
38 Application Python Python 3.0.1 Version Details Vulnerabilities
39 Application Python Python 3.1 Version Details Vulnerabilities
40 Application Python Python 3.1.1 Version Details Vulnerabilities
41 Application Python Python 3.1.2 Version Details Vulnerabilities
42 Application Python Python 3.1.3 Version Details Vulnerabilities
43 Application Python Python 3.2 Alpha Version Details Vulnerabilities
44 Application Python Python 3.2 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Python Python 44

- References For CVE-2011-1521 CONFIRM
SUSE SUSE-SR:2011:009
MLIST [oss-security] 20110328 Re: CVE Request -- Python (urllib, urllib2): Improper management of ftp:// and file:// URL schemes
MLIST [oss-security] 20110324 CVE Request -- Python (urllib, urllib2): Improper management of ftp:// and file:// URL schemes CONFIRM
MLIST [oss-security] 20110911 CVE Request -- Django: v1.3.1, v1.2.7 multiple security flaws CONFIRM
MLIST [oss-security] 20110913 Re: CVE Request -- Django: v1.3.1, v1.2.7 multiple security flaws
MLIST [oss-security] 20110916 Re: CVE Request -- Django: v1.3.1, v1.2.7 multiple security flaws

- Metasploit Modules Related To CVE-2011-1521

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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